Cases of word usage

1) the front part of the head (from the forehead to the chin) (face)

2) to draw the eyebrows together causing lines on the forehead (to express disapproval, puzzlement, deep thought etc) (frown)

3) a long cut in the ground made by a plough; a long wrinkle on the forehead (furrow)

4) an act to welcome a person or to show respect or honour, especially (e.g. in the armed forces) the raising of the hand to the forehead (salute)

5) a building used for the worship of a god in some religions; the flat part of either side of the forehead (temple)