Here are the different types of adverbial clauses:
Adverbial clauses of manner
Adverbial clauses of place
Adverbial clauses of condition
Adverbial clauses of reason
Adverbial clauses of time
Adverbial clauses of purpose
Adverbial clauses of comparison (of degree and manner)
Adverbial clause of concession
Each type communicates different information, but every type is a group of words that functions as an adverb.