imaging vs chimaera

imaging and chimaera both are nouns.

Word	Noun	Adjective	Verb	Adverb
imaging	Yes	No	No	No
chimaera	Yes	No	No	No

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

imaging (noun)	chimaera (noun)
(medicine) obtaining pictures of the interior of the body	a deep-sea fish with a tapering body, smooth skin, and long threadlike tail
the ability to form mental images of things or events	a grotesque product of the imagination