1) a son
    1a) rarely used for the young of animals
    1b) generally used of the offspring of men
    1c) in a restricted sense, the male offspring (one born by a father
         and of a mother)
    1d) in a wider sense, a descendant, one of the posterity of any one,
        1d1) the children of Israel
        1d2) sons of Abraham
    1e)) used to describe one who depends on another or is his follower
         1e1) a pupil
 2) son of man
    2a) term describing man, carrying the connotation of weakness and
        mortality
    2b) son of man, symbolically denotes the fifth kingdom in Daniel 7:13
        and by this term its humanity is indicated in contrast with the
        barbarity and ferocity of the four preceding kingdoms (the
        Babylonian, the Median and the Persian, the Macedonian, and the
        Roman) typified by the four beasts. In the book of Enoch (2nd
        Century) it is used of Christ.
    2c) used by Christ himself, doubtless in order that he might
        intimate his Messiahship and also that he might designate
        himself as the head of the human race, the man, the one who
        both furnished the pattern of the perfect man and acted on
        behalf of all mankind. Christ seems to have preferred this to
        the other Messianic titles, because by its lowliness it was
        least suited to foster the expectation of an earthly Messiah
        in royal splendour.
 3) son of God
    3a) used to describe Adam (Lk. 3:38)
    3b) used to describe those who are born again (Lk. 20:36) and of
        angels and of Jesus Christ
    3c) of those whom God esteems as sons, whom he loves, protects and
        benefits above others
        3c1) in the OT used of the Jews
        3c2) in the NT of Christians
        3c3) those whose character God, as a loving father, shapes by
             chastisements (Heb. 12:5-8)
    3d) those who revere God as their father, the pious worshippers of
        God, those who in character and life resemble God, those who
        are governed by the Spirit of God, repose the same calm and
        joyful trust in God which children do in their parents (Rom.
        8:14, Gal. 3:26 ), and hereafter in the blessedness and glory
        of the life eternal will openly wear this dignity of the sons
        of God. Term used preeminently of Jesus Christ, as enjoying
        the supreme love of God, united to him in affectionate
        intimacy, privy to his saving councils, obedient to the
        Father's will in all his acts

 For Synonyms see entry G5868