well-knit vs well-set

well-knit and well-set both are adjectives.

Word	Noun	Adjective	Verb	Adverb
well-knit	No	Yes	No	No
well-set	No	Yes	No	No

As adjectives, well-knit and well-set are synonyms defined as:

well-knit (adjective)	well-set (adjective)
strongly and firmly constructed	strongly and firmly constructed