het vs heated up

het and heated up both are adjectives.

Word	Noun	Adjective	Verb	Adverb
het	No	Yes	No	No
heated up	No	Yes	No	No

As adjectives, het and heated up are synonyms defined as:

het and heated up: made warm or hot (`het' is a dialectal variant of `heated')

Other synonyms of het include heated, het up.

het (adjective)	heated up (adjective)
made warm or hot (`het' is a dialectal variant of `heated')	made warm or hot (`het' is a dialectal variant of `heated')