Boid (pronounced "bow-id" - 2 syllables with a long "O" sound, not "boyd") - a snake from the family "Boidae," which encompasses the subfamilies Boinae (boas & close kin), Erycinae (sand boas & kin), and Pythoninae (pythons & kin).

So while all boids are constrictors, not all constrictors are boids. There are many colubrid snakes that constrict their food, as well.

Hope this helps!

K~