telephoto vs telephotograph

telephoto and telephotograph both are nouns.

Word	Noun	Adjective	Verb	Adverb
telephoto	Yes	No	No	No
telephotograph	Yes	No	No	No

As nouns, telephoto and telephotograph are synonyms defined as:

telephoto (noun)	telephotograph (noun)
a photograph made with a telephoto lens	a photograph made with a telephoto lens
	a photograph transmitted and reproduced over a distance