A word that begins with an adverbial clause?

a word that begins an adjective clause?

a group of words that has a subject and a verb?

1) Some subordinating conjunction that are used in adverbial clauses are: Because, After, Before, When, Since, Although, Even though and so on.

Example: Since he is millionaire, he doesn't have enough time to visit his friends.

2) Adjective clauses begin with relative pronouns: Which, that, who, whose, whom, and so on.

Example: The woman who lives across the street is pregnant.

3) A group of word that has a subject a verb can be a simple sentence or a clause.

Example: The woman is pregnant.