scrumptious vs yummy

scrumptious and yummy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
scrumptious	No	Yes	No	No
yummy	No	Yes	No	No

As adjectives, scrumptious and yummy are synonyms defined as:

Other synonyms of scrumptious include delectable, delicious, luscious, pleasant-tasting, toothsome.

scrumptious (adjective)	yummy (adjective)
extremely pleasing to the sense of taste	extremely pleasing to the sense of taste