scrawny vs skinny

scrawny is not a noun while skinny is a noun.

Word	Noun	Adjective	Verb	Adverb
scrawny	No	Yes	No	No
skinny	Yes	Yes	No	No

As adjectives, scrawny and skinny are synonyms defined as:

Other synonyms of scrawny include boney, bony, scraggly, scraggy, underweight, weedy.

scrawny (noun)	skinny (noun)
	confidential information about a topic or person

scrawny (adjective)	skinny (adjective)
inferior in size or quality	of or relating to or resembling skin
being very thin	giving or spending with reluctance
	being very thin
	fitting snugly