Cases of word usage

1) a frame with beads or balls sliding on the roads, for a learning to count or for calculating (abacus)

2) on fire (ablaze)

3) a place for washing in a camp or on a ship (ablutions)

4) on the authority of (according)

5) the one on dice, playing-cards etc; card so marked (ace)

6) a skin infection (common among young people) in which there are spots on the face and neck (acne)

7) a person who can do clever or unusual physical or gymnastic acts, e.g. on a trapeze (acrobat)

8) a person who acts on the stage or TV, or in films (actor)

9) a woman who acts on the stage or TV, or in films (actress)

10) far on in life; having made much progress (advanced)