skinny vs penny-pinching

skinny and penny-pinching both are nouns.

Word	Noun	Adjective	Verb	Adverb
skinny	Yes	Yes	No	No
penny-pinching	Yes	Yes	No	No

As adjectives, skinny and penny-pinching are synonyms defined as:

Other synonyms of skinny include cheeseparing, close, near.

skinny (noun)	penny-pinching (noun)
confidential information about a topic or person	extreme care in spending money; reluctance to spend money unnecessarily

skinny (adjective)	penny-pinching (adjective)
of or relating to or resembling skin	giving or spending with reluctance
giving or spending with reluctance
being very thin
fitting snugly