webby vs webbed

webby and webbed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
webby	No	Yes	No	No
webbed	No	Yes	No	No

As adjectives, webby and webbed are synonyms defined as:

Other synonyms of webby include lacy, netlike, netted, weblike.

webby (adjective)	webbed (adjective)
having open interstices or resembling a web	(of the feet of some animals) having the digits connected by a thin fold of skin
	having open interstices or resembling a web