In both winter and monsoon months, níyol is often accompanied by k’os, which is the Navajo word for cloud.
Culturally, rain clouds are a blessing. The dry climate of the Southwest region of the United States makes every raindrop precious. In the winter, snow clouds bring the possibility of more moisture that soaks into the ground.
In common usage, the word daak’os is also used to refer to a multitude of clouds.
There is also the word ak’os which is the non-possessive word for “neck,” i.e. “a neck.”
The body part needs shi-, ni-, bi-, etc. to form shik’os (sik’os), nikos, bik’os, etc. to differentiate it from the word for cloud.
So k’os and ak’os are separate terms!