membranous vs membrane-forming

membranous and membrane-forming both are adjectives.

Word	Noun	Adjective	Verb	Adverb
membranous	No	Yes	No	No
membrane-forming	No	Yes	No	No

As adjectives, membranous and membrane-forming are synonyms defined as:

membranous and membrane-forming: characterized by formation of a membrane (or something resembling a membrane)

membranous (adjective)	membrane-forming (adjective)
relating to or made of or similar to a membrane	characterized by formation of a membrane (or something resembling a membrane)
characterized by formation of a membrane (or something resembling a membrane)