The difference between Bill and Buck

Bill as a noun:

Any of various bladed or pointed hand weapons, originally designating an Anglo-Saxon sword, and later a weapon of infantry, especially in the 14th and 15th centuries, commonly consisting of a broad, heavy, double-edged, hook-shaped blade, with a short pike at the back and another at the top, attached to the end of a long staff.

Bill as a noun:

A cutting instrument, with hook-shaped point, and fitted with a handle, used in pruning, etc.; a billhook.

Bill as a noun:

Somebody armed with a bill; a billman.

Bill as a noun:

A pickaxe, or mattock.

Bill as a noun (nautical):

The extremity of the arm of an anchor; the point of or beyond the fluke (also called the peak).

Bill as a verb (transitive):

To dig, chop, etc., with a bill.

Bill as a noun:

The beak of a bird, especially when small or flattish; sometimes also used with reference to a platypus, turtle, or other animal.

Bill as a noun:

A beak-like projection, especially a promontory.

Bill as a noun:

Of a cap or hat: the brim or peak, serving as a shade to keep sun off the face and out of the eyes.

Bill as a verb (obsolete):

To peck.

Bill as a verb:

To stroke bill against bill, with reference to doves; to caress in fondness.

Bill as a noun:

A written list or inventory. (Now obsolete except in specific senses or set phrases; bill of lading, bill of goods, etc.)

Bill as a noun:

A document, originally sealed; a formal statement or official memorandum. (Now obsolete except with certain qualifying words; bill of health, bill of sale etc.)

Bill as a noun:

A draft of a law, presented to a legislature for enactment; a proposed or projected law.

Bill as a noun (obsolete, legal):

A declaration made in writing, stating some wrong the complainant has suffered from the defendant, or a fault committed by some person against a law.

Bill as a noun (US):

A piece of paper money; a banknote.

Bill as a noun:

A written note of goods sold, services rendered, or work done, with the price or charge; an invoice.

Bill as a noun:

A paper, written or printed, and posted up or given away, to advertise something, as a lecture, a play, or the sale of goods

Bill as a noun:

A writing binding the signer or signers to pay a certain sum at a future day or on demand, with or without interest, as may be stated in the document. A bill of exchange. In the United States, it is usually called a note, a note of hand, or a promissory note.

Bill as a noun:

A set of items presented together.

Bill as a verb (transitive):

To advertise by a bill or public notice.

Bill as a verb (transitive):

To charge; to send a bill to.

Bill as a noun:

The bell, or boom, of the bittern.

Buck as a noun:

A male deer, antelope, sheep, goat, rabbit, hare, and sometimes the male of other animals such as the ferret and shad.

Buck as a noun (US):

An uncastrated sheep, a ram.

Buck as a noun:

A young buck; an adventurous, impetuous, dashing, or high-spirited young man.

Buck as a noun (British, obsolete):

A fop or dandy.

Buck as a noun (US, dated, derogatory):

A black or Native American man.

Buck as a noun (US, Australia, NZ, Canada, informal):

A dollar (one hundred cents).

Buck as a noun (South Africa, informal):

A rand (currency unit).

Buck as a noun (by extension, Australia, South Africa, US, informal):

Money

Buck as a noun (US, slang):

One hundred.

Buck as a noun (dated):

An object of various types, placed on a table to indicate turn or status; such as a brass object, placed in rotation on a US Navy wardroom dining table to indicate which officer is to be served first, or an item passed around a poker table indicating the dealer or placed in the pot to remind the winner of some privilege or obligation when his or her turn to deal next comes.

Buck as a noun (US, in certain metaphors or phrases):

Blame; responsibility; scapegoating; finger-pointing.

Buck as a noun (UK, dialect):

The body of a post mill, particularly in East Anglia. See Wikipedia:Windmill machinery.

Buck as a noun (finance):

One million dollars.

Buck as a noun (informal):

A euro.

Buck as a noun:

A frame on which firewood is sawed; a sawhorse; a sawbuck.

Buck as a noun:

A wood or metal frame used by automotive customizers and restorers to assist in the shaping of sheet metal bodywork. See [http://www.hotrod.com/how-to/additional-how-to/1009sr-making-a-wood-buck/ Street Rodder "Making a Wood Buck"].

Buck as a noun (AAVE, dated, dance):

Buck as a noun:

Buck as a verb (intransitive):

To copulate, as bucks and does.

Buck as a verb (intransitive):

To bend; buckle.

Buck as a verb (intransitive, of a horse, _, or similar saddle or pack animal):

To leap upward arching its back, coming down with head low and forelegs stiff, forcefully kicking its hind legs upward, often in an attempt to dislodge or throw a rider or pack.

Buck as a verb (transitive, of a horse, _, or similar saddle or pack animal):

To throw (a rider or pack) by bucking.

Buck as a verb (transitive, military):

To subject to a mode of punishment which consists of tying the wrists together, passing the arms over the bent knees, and putting a stick across the arms and in the angle formed by the knees.

Buck as a verb (intransitive, by extension):

To resist obstinately; oppose or object strongly.

Buck as a verb (intransitive, by extension):

To move or operate in a sharp, jerking, or uneven manner.

Buck as a verb (transitive, by extension):

To overcome or shed (e.g., an impediment or expectation), in pursuit of a goal; to force a way through despite (an obstacle); to resist or proceed against.

Buck as a verb (riveting):

To press a reinforcing device (bucking bar) against (the force of a rivet) in order to absorb vibration and increase expansion. See Wikipedia: Rivet:Installation.

Buck as a verb (forestry):

To saw a felled tree into shorter lengths, as for firewood.

Buck as a verb (electronics):

To output a voltage that is lower than the input voltage. See Wikipedia: Buck converter

Buck as a noun (Scotland):

The beech tree.

Buck as a noun:

Lye or suds in which cloth is soaked in the operation of bleaching, or in which clothes are washed.

Buck as a noun:

The cloth or clothes soaked or washed.

Buck as a verb:

To soak, steep or boil in lye or suds, as part of the bleaching process.

Buck as a verb:

To wash (clothes) in lye or suds, or, in later usage, by beating them on stones in running water.

Buck as a verb (mining):

To break up or pulverize, as ores.