Is there any difference between "go through a door" and "get through a door"?
Get through means "to suffer through."
To get through something usually means in an emotional state, like to get through a divorce, or to get through something challenging, like a test.
She was so tired that it was difficult to get through the day.
Go through means "to pass through something."
"Go through something" is the physical of "go through something," and it is always in the present tense, like "go through a divorce" or "go through a tunnel."
After you buy your token, put it in the slot and go through the turnstile. Go through the old city gates and you will see beautiful 15th century church.
So its always you go through a door, not get through a door.
NOAD lists five meanings of go through:
go through 1 undergo (a difficult or painful period or experience) : the country is going through a period of economic instability. 2 search through or examine carefully or in sequence : she started to go through the bundle of letters. 3 (of a proposal or contract) be officially approved or completed : the sale of the building is set to go through. 4 [informal] use up or spend (available money or other resources). 5 (of a book) be successively published in (a specified number of editions) : within two years it went through thirty-one editions.
and two for get through
get through 1 (also get someone through) pass or assist someone in passing (a difficult or testing experience or period) : I need these lessons to get me through my exam. • (also get something through) (with reference to a piece of legislation) become or cause to become law. 2 make contact by telephone : after an hour of busy signals, I finally got through. • succeed in communicating with someone in a meaningful way : I just don't think anyone can get through to these kids.
There are two things worth noting:
- (a) There is much similarity between first listed meanings of each entry, in that both connote dealing with some kind of hardship, difficulty, or struggle, and
- (b) none of the meanings in either entry are related to going or getting through a doorway or tunnel.
So, to go through a doorway simply means to pass through the doorway. There is no idiomatic meaning.
To get through a doorway implies getting through a doorway after some small struggle:
After getting stuck for a moment, she finally got through the doorway with her two heavy shopping bags.