Coordinating conjunctions
- Join equal ideas: and, but, or, so.
- It rained, so we stayed home.
Subordinating conjunctions
- Join a main idea to a reason/condition: because, although, if, when.
- I was late because I missed the bus.
Key idea
Coordinating conjunctions (and, but, so) join equal ideas; subordinating ones (because, if, although) add a reason or condition.
Remember
'Because' gives a reason; 'although' shows contrast.