immense vs vast

immense and vast both are adjectives.

Word	Noun	Adjective	Verb	Adverb
immense	No	Yes	No	No
vast	No	Yes	No	No

As adjectives, immense and vast are synonyms defined as:

immense and vast: unusually great in size or amount or degree or especially extent or scope

Other synonyms of immense include Brobdingnagian, huge.

immense (adjective)	vast (adjective)
unusually great in size or amount or degree or especially extent or scope	unusually great in size or amount or degree or especially extent or scope