developing vs processing

developing and processing both are nouns.

Word	Noun	Adjective	Verb	Adverb
developing	Yes	Yes	No	No
processing	Yes	No	No	No

As nouns, processing is a hypernym of developing; that is, processing is a word with a broader meaning than developing:

developing: processing a photosensitive material in order to make an image visible
processing: preparing or putting through a prescribed procedure

developing (noun)	processing (noun)
processing a photosensitive material in order to make an image visible	preparing or putting through a prescribed procedure

developing (adjective)	processing (adjective)
relating to societies in which capital needed to industrialize is in short supply