Ululate and Yip

Ululate verb - To make a long loud mournful sound.

Yip and ululate are semantically related in howl topic. In some cases you can use "Yip" instead the word "Ululate" as a verb or a noun.

Yip verb - Bark in a high-pitched tone.

Ululate and yip are semantically related in long topic. You can use "Ululate" instead the word "Yip" as a noun or a verb, if it concerns topics such as howl, loud communication.