tons vs large indefinite amount

tons and large indefinite amount both are nouns.

Word	Noun	Adjective	Verb	Adverb
tons	Yes	No	No	No
large indefinite amount	Yes	No	No	No

As nouns, large indefinite amount is a hypernym of tons; that is, large indefinite amount is a word with a broader meaning than tons:

tons: a large number or amount
large indefinite amount: an indefinite quantity that is above the average in size or magnitude

Other hypernyms of tons include large indefinite quantity.

tons (noun)	large indefinite amount (noun)
a large number or amount	an indefinite quantity that is above the average in size or magnitude