wet blanket vs worrier

wet blanket and worrier both are nouns.

Word	Noun	Adjective	Verb	Adverb
wet blanket	Yes	No	No	No
worrier	Yes	No	No	No

As nouns, worrier is a hyponym of wet blanket; that is, worrier is a word with a more specific, narrower meaning than wet blanket:

Other hyponyms of wet blanket include fuss-budget, fusspot, worrywart.

wet blanket (noun)	worrier (noun)
someone who spoils the pleasure of others	thinks about unfortunate things that might happen