The difference between Bill and Invoice

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.

Invoice as a noun:

A bill; a commercial document issued by a seller to a buyer indicating the products, quantities and agreed prices for products or services that the seller has already provided the buyer with. An invoice indicates that, unless paid in advance, payment is due by the buyer to the seller, according to the agreed terms.

Invoice as a noun:

The lot or set of goods as shipped or received.

Invoice as a noun:

(generally of a vehicle) The price which a seller or dealer pays the manufacturer for goods to be sold.

Invoice as a verb (transitive):

To bill; to issue an invoice to.

Invoice as a verb (transitive):

To make an invoice for (goods or services).