wonderful vs phenomenal

wonderful and phenomenal both are adjectives.

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

As adjectives, wonderful and phenomenal are synonyms defined as:

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

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

wonderful (adjective)	phenomenal (adjective)
extraordinarily good or great; used especially as intensifiers	of or relating to a phenomenon
	extraordinarily good or great; used especially as intensifiers