No.
Biomes
No, they do not. Each of them has several meanings, and I can't think of any overlap between any of them.
no
Half-dead is not a euphemism.
The same thing you can do with a meter
No, but they can overlap.
They overlap.
Yes, half past 8 is the same thing as 8:30. In both cases, it indicates that it is 30 minutes after 8 o'clock.
No it is not the same thing. "Half and half" is half milk and half cream. Heavy Cream is mostly cream and contains much less milk.
One third. (One half of two of anything is one of the same thing.)
Half of 12000 is the same thing as 12000 divided by 2. 12000/2=6000. So 6000 is half of 12000.
This is the same thing as square root of x.