In subordination, you put a dependent word (subordinating conjunction) in front of one of the two sentences, which then becomes a dependent clause and is no longer a complete sentence.
TWO SENTENCES | |
JOINED THROUGH SUBORDINATION | |
JOINED THROUGH SUBORDINATION | |
COMMON DEPENDENT WORDS (subordinating conjunctions)
after | if | unless |
although | if only | until |
as | now that | when |
as if | once | whenever |
because | since | where |
before | so that | while |
even though |