worthy vs suitable

worthy is a noun but suitable is not a noun.

Word	Noun	Adjective	Verb	Adverb
worthy	Yes	Yes	No	No
suitable	No	Yes	No	No

As adjectives, worthy and suitable are synonyms defined as:

Other synonyms of worthy include desirable.

worthy (noun)	suitable (noun)
an important, honorable person (word is often used humorously)

worthy (adjective)	suitable (adjective)
having worth or merit or value; being honorable or admirable	worthy of being chosen especially as a spouse
worthy of being chosen especially as a spouse	meant or adapted for an occasion or use
having qualities or abilities that merit recognition in some way