Problem: Word: air

Sentence 1: An air of mystery.

Sentence 2: The program was on the air from 9 til midnight.

Same meaning?
A: different meanings

Problem: Word: go

Sentence 1: Messages must go through diplomatic channels.

Sentence 2: Do you think the sofa will go through the door?

Same meaning?
A: different meanings

Problem: Word: raise

Sentence 1: Raise a shout.

Sentence 2: Chew with your mouth shut -- were you raised in a barn?

Same meaning?
A: different meanings

Problem: Word: check

Sentence 1: Check the brakes.

Sentence 2: Check out the engine.

Same meaning?
A:
the same meaning