Ki-Yi is the word used to describe the sound a hurt coyote makes. It's also a hand call produced by Primos.
Weems is a call manufacturer as well. Particularly producing rabbit distress sounds.
Whimper is usually referred to as the "female whimper" or estrous whimper, etc. It refers to the sound a female coyote makes during breeding season when a male is trying to mate with her.
And a howl of course can mean any part of the coyotes vocalizations. Howlers are the hand calls that produce those sounds.
Hope this helps.