The difference between Bill and Note

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.

Note as a noun:

A symbol or annotation. A mark or token by which a thing may be known; a visible sign; a character; a distinctive mark or feature; a characteristic quality. A mark, or sign, made to call attention, to point out something to notice, or the like; a sign, or token, proving or giving evidence. A brief remark; a marginal comment or explanation; hence, an annotation on a text or author; a comment; a critical, explanatory, or illustrative observation.

Note as a noun:

A written or printed communication or commitment. A brief piece of writing intended to assist the memory; a memorandum; a minute. A short informal letter; a billet. A diplomatic missive or written communication. A written or printed paper acknowledging a debt, and promising payment A list of items or of charges; an account. A piece of paper money; a banknote. A small size of paper used for writing letters or notes.

Note as a noun (music):

A sound. A character, variously formed, to indicate the length of a tone, and variously placed upon the staff to indicate its pitch. A musical sound; a tone; an utterance; a tune. A key of the piano or organ.

Note as a noun (uncountable):

Observation; notice; heed.

Note as a noun (uncountable):

Reputation; distinction.

Note as a noun (obsolete):

Notification; information; intelligence.

Note as a noun (obsolete):

Mark of disgrace.

Note as a verb (transitive):

To notice with care; to observe; to remark; to heed.

Note as a verb (transitive):

To record in writing; to make a memorandum of.

Note as a verb (transitive):

To denote; to designate.

Note as a verb (transitive):

To annotate.

Note as a verb (transitive):

To set down in musical characters.

Note as a verb (transitive):

To record on the back of (a bill, draft, etc.) a refusal of acceptance, as the ground of a protest, which is done officially by a notary.

Note as a noun (uncountable, UK, _, dialectal, Northern England, Ireland, Scotland):

That which is needed or necessary; business; duty; work.

Note as a noun (UK, _, dialectal, Northern England, Ireland, Scotland):

The giving of milk by a cow or sow; the period following calving or farrowing during which a cow or sow is at her most useful (i.e. gives milk); the milk given by a cow or sow during such a period.