What does Micah mean?
A shortened form of Micaiah (Mikayahu), built as a rhetorical question: mi 'who' + ka 'like' + Yah (short for Yahweh), 'Who is like Yah(weh)?' It is not a literal statement but a theophoric name affirming God's incomparability. Distinct from Michael, which uses El rather than Yah.
What does Jonah mean?
From Hebrew yonah, 'dove.' The reluctant prophet of the Book of Jonah. A plain concrete noun with no theophoric element; the dove's later peace symbolism is cultural, not part of the etymology.