thank offering vs offering

thank offering and offering both are nouns.

Word	Noun	Adjective	Verb	Adverb
thank offering	Yes	No	No	No
offering	Yes	No	No	No

As nouns, offering is a hypernym of thank offering; that is, offering is a word with a broader meaning than thank offering:

thank offering: an offering made as an expression of thanks
offering: money contributed to a religious organization; item or items contributed to a religious organization for religious purposes

thank offering (noun)	offering (noun)
an offering made as an expression of thanks	the act of contributing to the funds of a church or charity
	something offered (as a proposal or bid)
	the verbal act of offering
	money contributed to a religious organization; item or items contributed to a religious organization for religious purposes