Which part of speech joins words phrases and clauses?

The part of speech that joins words, phrases, and clauses is a conjunction.

Here's a breakdown:

* Words: "I like and enjoy"

* Phrases: "She went to the store but didn't buy anything."

* Clauses: "He was tired, so he went to bed."

There are three main types of conjunctions:

* Coordinating conjunctions: Connect words, phrases, or clauses of equal grammatical rank. Examples: and, but, or, nor, for, yet, so

* Subordinating conjunctions: Connect a dependent clause to an independent clause. Examples: because, although, since, while, if, unless, after, before

* Correlative conjunctions: Work in pairs to connect words, phrases, or clauses. Examples: both...and, either...or, neither...nor, not only...but also