terrific vs phenomenal

terrific and phenomenal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
terrific	No	Yes	No	No
phenomenal	No	Yes	No	No

As adjectives, terrific and phenomenal are synonyms defined as:

terrific and phenomenal: extraordinarily good or great; used especially as intensifiers

Other synonyms of terrific include fantastic, grand, howling, marvellous, marvelous, rattling, tremendous, wonderful, wondrous.

terrific (adjective)	phenomenal (adjective)
causing extreme terror	of or relating to a phenomenon
extraordinarily good or great; used especially as intensifiers	extraordinarily good or great; used especially as intensifiers
very great or intense