receipt vs ticket stub

receipt and ticket stub both are nouns.

Word	Noun	Adjective	Verb	Adverb
receipt	Yes	No	Yes	No
ticket stub	Yes	No	No	No

As nouns, ticket stub is a hyponym of receipt; that is, ticket stub is a word with a more specific, narrower meaning than receipt:

Other hyponyms of receipt include stub, bill of lading, waybill, pawn ticket.

receipt (noun)	ticket stub (noun)
the act of receiving	a torn part of a ticket returned to the holder as a receipt
an acknowledgment (usually tangible) that payment has been made

receipt (verb)	ticket stub (verb)
mark or stamp as paid
report the receipt of