inadequate vs unequal

inadequate and unequal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
inadequate	No	Yes	No	No
unequal	No	Yes	No	No

As adjectives, inadequate and unequal are synonyms defined as:

inadequate and unequal: lacking the requisite qualities or resources to meet a task

inadequate (adjective)	unequal (adjective)
lacking the requisite qualities or resources to meet a task	poorly balanced or matched in quantity or value or measure
of insufficient quantity to meet a need	lacking the requisite qualities or resources to meet a task