dragger vs fishing boat

dragger and fishing boat both are nouns.

Word	Noun	Adjective	Verb	Adverb
dragger	Yes	No	No	No
fishing boat	Yes	No	No	No

As nouns, fishing boat is a hypernym of dragger; that is, fishing boat is a word with a broader meaning than dragger:

dragger: a fishing boat that uses a trawl net or dragnet to catch fish
fishing boat: a vessel for fishing; often has a well to keep the catch alive

Other hypernyms of dragger include fishing smack, fishing vessel.

dragger (noun)	fishing boat (noun)
a fishing boat that uses a trawl net or dragnet to catch fish	a vessel for fishing; often has a well to keep the catch alive
someone who pulls or tugs or drags in an effort to move something