photography vs underexpose

photography is a noun but underexpose is not a noun.

Word	Noun	Adjective	Verb	Adverb
photography	Yes	No	No	No
underexpose	No	No	Yes	No

photography (noun)	underexpose (noun)
the act of taking and printing photographs
the occupation of taking and printing photographs or making movies
the process of producing images of objects on photosensitive surfaces

photography (verb)	underexpose (verb)
	expose insufficiently
	expose to too little light