a woman that gives birth every year; cattle that give increase each year

bi-weekly, every two weeks, fortnightly pay

every year, yearly

constantly, every instant

every moment, constantly

side, edge, flank, door (as in each door in a double-door)

to make fight, to turn people/animals against each other, to cause to go to war, to cause to collide or bump into

mutual, reciprocal, between each other

daily, each day