A is one thing B is another 構文

A is one thing B is another (thing). AとBとは別物、AとBは違う。A is one thing but B is another. のようになることが多い。 2:24 it's one thing to be close to Max when he's resting but it's another to get close when he is hunting.

A Wild Canadian Lynx And A Cameraman Develop An Amazing Relationship | Wild Canadian Year

0:29 it's one thing to see Pennywise on screen, there's another thing to sit right next to him in the theater.

Clown Dressed as Pennywise Sits Alone in Movie Theater Before Showing of 'It'

1:20 working next to human is one thing but working like a human is another.

Using robots to try and save US jobs