caution vs caveat

caution and caveat both are nouns.

Word	Noun	Adjective	Verb	Adverb
caution	Yes	No	Yes	No
caveat	Yes	No	No	No

As nouns, caution and caveat are synonyms defined as:

caution (noun)	caveat (noun)
the trait of being cautious; being attentive to possible danger	a warning against certain acts
the trait of being circumspect and prudent	(law) a formal notice filed with a court or officer to suspend a proceeding until filer is given a hearing
judiciousness in avoiding harm or danger
a warning against certain acts

caution (verb)	caveat (verb)
warn strongly; put on guard