describe X as

This link was created in response to a student writing:

a large number of papers describe grammar teaching is an irreplaceable part in English language learning

The link is http://ske.li/e17 and looks a bit like this:

relate to

This link was created in response to a student writing:

Ellis (2006:83) states that grammar teaching relates to many instructional technique

The link is http://ske.li/esl and it looks a bit like this: