Am, about, around.

Ar, upon, or bordering upon.

Avon, or Afon, a river.

Ban, high, lofty, tall.

Bach, little, small.

Bedd, a grave, a sepulchre.

Bettws, a station between hill and vale.

Blaen, a point or end.

Bôd, a residence.

Braich, a branch.