Conjunctions connect words, phrases, or clauses. Common examples include:
* Coordinating conjunctions: and, but, or, nor, for, so, yet
* Subordinating conjunctions: because, although, since, while, if, unless, when
"Can" is a modal verb, which is a type of auxiliary verb that expresses ability, permission, or possibility.
For example:
* I can swim. (Ability)
* Can you help me? (Request for permission)
* It can rain tomorrow. (Possibility)
Let me know if you have any other questions about parts of speech!