thank vs recognize

thank and recognize both are verbs.

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

As verbs, recognize is a hyponym of thank; that is, recognize is a word with a more specific, narrower meaning than thank:

Other hyponyms of thank include acknowledge, recognise.

thank (verb)	recognize (verb)
express gratitude or show appreciation to	perceive to be the same
	be fully aware or cognizant of
	accept (someone) to be what is claimed or accept his power and authority
	express obligation, thanks, or gratitude for
	express greetings upon meeting someone
	detect with the senses
	grant credentials to
	show approval or appreciation of
	exhibit recognition for (an antigen or a substrate)