Nouns:
* Avoidance: the act of avoiding something.
* Avoider: a person who avoids something.
Verbs:
* Avoid: to keep away from.
* Unavoidable: impossible to avoid.
Adjectives:
* Avoidable: capable of being avoided.
* Unavoidable: impossible to avoid.
Let me know if you'd like more examples or want to explore other related words!