'Common' in the Bible

And one of the people of that place said in answer, And who is their father? So it became a common saying, Is even Saul among the prophets?

Saul’s servants reported these words directly to David, but he replied, “Is it trivial in your sight to become the king’s son-in-law? I am a poor man who is common.”

And the priest answered David, and said, There is no common bread under mine hand, but there is hallowed bread; if the young men have kept themselves at least from women.

And David answered the priest, and said unto him, Of a truth women have been kept from us about these three days, since I came out, and the vessels of the young men are holy, and the bread is in a manner common, yea, though it were sanctified this day in the vessel.