at sea vs baffled

at sea is not a noun while baffled is a noun.

Word	Noun	Adjective	Verb	Adverb
at sea	No	Yes	No	No
baffled	Yes	Yes	No	No

As adjectives, at sea and baffled are synonyms defined as:

at sea and baffled: perplexed by many conflicting situations or statements; filled with bewilderment

Other synonyms of at sea include befuddled, bemused, bewildered, confounded, confused, lost, mazed, mixed-up.

at sea (noun)	baffled (noun)
	people who are frustrated and perplexed

at sea (adjective)	baffled (adjective)
perplexed by many conflicting situations or statements; filled with bewilderment	perplexed by many conflicting situations or statements; filled with bewilderment