Riddle: my first is in commoner but not in encore. my second is in parrot but not in trap. my third is in reprehension but not in hornpipe. my fourth is in astrolabe but not in tolerable please help

Asymbol always — a. gives human qualities to nonhuman things b. uses a connective word such as like or as c. stands both for itself and for something else d. presents an apparent contradiction that is actually true