flange vs projection

flange and projection both are nouns.

Word	Noun	Adjective	Verb	Adverb
flange	Yes	No	No	No
projection	Yes	No	No	No

As nouns, projection is a hypernym of flange; that is, projection is a word with a broader meaning than flange:

flange (noun)	projection (noun)
a projection used for strength or for attaching to another object	the act of expelling or projecting or ejecting
	the act of projecting out from something
	any structure that branches out from a central support
	the representation of a figure or solid on a plane as it would look from a particular direction
	a planned undertaking
	a prediction made by extrapolating from past observations
	the projection of an image from a film onto a screen
	the acoustic phenomenon that gives sound a penetrating quality
	(psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
	any solid convex shape that juts out from something