from a presumed compound of σύν and the base of ἔργον; a co-laborer, i.e. coadjutor:--companion in labour, (fellow-)helper(-labourer, -worker), labourer together with, workfellow.
from ἀποστέλλω; a delegate; specially, an ambassador of the Gospel; officially a commissioner of Christ ("apostle") (with miraculous powers):--apostle, messenger, he that is sent.
from a derivative of λαός and ἔργον; a public servant, i.e. a functionary in the Temple or Gospel, or (genitive case) a worshipper (of God) or benefactor (of man):--minister(-ed).
TRV