bore vs windbag

bore and windbag both are nouns.

Word	Noun	Adjective	Verb	Adverb
bore	Yes	No	Yes	No
windbag	Yes	No	No	No

As nouns, windbag is a hyponym of bore; that is, windbag is a word with a more specific, narrower meaning than bore:

Other hyponyms of bore include gasbag, nudnick, nudnik, platitudinarian, stuffed shirt.

bore (noun)	windbag (noun)
a hole or passage made by a drill; usually made for exploratory purposes	a boring person who talks a great deal about uninteresting topics
diameter of a tube or gun barrel
a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)
a person who evokes boredom

bore (verb)	windbag (verb)
make a hole, especially with a pointed power or hand tool
cause to be bored