What does Ari mean?
From Hebrew ari (also aryeh), 'lion.' A short modern Hebrew name; distinct from the theophoric Ariel ('lion of God'). A concrete noun — its strength associations are connotation, not etymology.
What does Doron mean?
From the Greek word doron 'gift', adopted into Hebrew and now used chiefly in Israel. Directly means 'gift'; predominantly masculine but occasionally unisex.