windbag vs bore

windbag and bore both are nouns.

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

As nouns, bore is a hypernym of windbag; that is, bore is a word with a broader meaning than windbag:

Other hypernyms of windbag include dullard.

windbag (noun)	bore (noun)
a boring person who talks a great deal about uninteresting topics	a hole or passage made by a drill; usually made for exploratory purposes
	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

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