In lang=en terms the difference between increase and release
is that
increase is to make (a quantity) larger while
release is to lease again; to grant a new lease of; to let back.
As verbs the difference between increase and release
is that
increase is (of a quantity) to become larger while
release is to let go (of); to cease to hold or contain or
release can be to lease again; to grant a new lease of; to let back.
As nouns the difference between increase and release
is that
increase is an amount by which a quantity is increased while
release is the event of setting (someone or something) free (eg hostages, slaves, prisoners, caged animals, hooked or stuck mechanisms).