Well for some like me you grow up talking English so it is quite easy
I'm not really sure how other country's teach English but I I'm ahem it it the same way that we learn french
El arco
Context clues:
El palacio nacional también está situado en la esquina.
Esquina = corner
Arco = corner (Arc)
It was first used in 1598
it lost popularity due to the fact that it was confusing after a while and was useless
Do you have any examples, or could you type things up a little better. Without that, I’m not too sure if anybody can really answer.