autograph vs holograph

autograph and holograph both are nouns.

Word	Noun	Adjective	Verb	Adverb
autograph	Yes	No	Yes	No
holograph	Yes	No	No	No

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

Other hyponyms of autograph include manuscript.

autograph (noun)	holograph (noun)
something written by one's own hand	the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography
a person's own signature	handwritten book or document

autograph (verb)	holograph (verb)
mark with one's signature