lithography vs planography

lithography and planography both are nouns.

Word	Noun	Adjective	Verb	Adverb
lithography	Yes	No	No	No
planography	Yes	No	No	No

As nouns, planography is a hypernym of lithography; that is, planography is a word with a broader meaning than lithography:

lithography: a method of planographic printing from a metal or stone surface
planography: the process of printing from a surface on which the printing areas are not raised but are ink-receptive (as opposed to ink repellent)

Other hypernyms of lithography include planographic printing.

lithography (noun)	planography (noun)
the act of making a lithographic print	the process of printing from a surface on which the printing areas are not raised but are ink-receptive (as opposed to ink repellent)
a method of planographic printing from a metal or stone surface