baseless vs groundless

baseless and groundless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
baseless	No	Yes	No	No
groundless	No	Yes	No	No

As adjectives, baseless and groundless are synonyms defined as:

Other synonyms of baseless include idle, unfounded, unwarranted, wild.

baseless (adjective)	groundless (adjective)
without a basis in reason or fact	without a basis in reason or fact