pA verb form which ends in -ing, -d, -ed, -n, -en, or -t, and is used as an adjective is a called a PARTICIPLE.
A participle is a form of verb that is like an adjective where it modifies a noun, noun phrase, verb, or verb phrase. It is a type of nonfinite verb form.
Participles can be present participles like writing, praising, and singing or they can be past participles like written, praised, and sung.
