fantastic vs tremendous

fantastic and tremendous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fantastic	No	Yes	No	No
tremendous	No	Yes	No	No

As adjectives, fantastic and tremendous are synonyms defined as:

fantastic and tremendous: extraordinarily good or great; used especially as intensifiers

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

fantastic (adjective)	tremendous (adjective)
extraordinarily good or great; used especially as intensifiers	extraordinarily good or great; used especially as intensifiers
extravagantly fanciful in design, construction, appearance	extraordinarily large in size or extent or amount or power or degree
ludicrously odd	extreme in degree or extent or amount or impact
existing in fancy only
fanciful and unrealistic; foolish