Yowl is a related term of sob.

In lang=en terms the difference between yowl and sob

is that yowl is express by yowling; utter with a yowl while sob is to say (something) while sobbing.

As nouns the difference between yowl and sob

is that yowl is a prolonged, loud cry, like the sound of an animal; a wail; a howl while sob is a cry with a short, sudden expulsion of breath.

As verbs the difference between yowl and sob

is that yowl is utter a yowl while sob is to weep with convulsive gasps or sob can be to soak.