Earlier today I got the word 直航 in my lessons and the meaning mnemonic said:
Well, with 直航 it’s the same thing, but more like with flying things, making this a nonstop flight.
Unless I’m misunderstanding it, this sounds like the word is only used when talking about flights.
However in the example sentence 直航 is used to talk about a ship.
So I’m a bit confused, is 直航 only used for flights, or can it be used for any form of travelling?