Answers have AGE in them

[Fincham]

Loss by wear - 7 letters
Feathers an Arrow - 9 letters
The Valley - 8 letters
Positional Advantage - 8 letters

Thanks for help

[quinie]

4 leverage?

[bibblebub]

3) cleavage ?

[ubasses]

1 wasteage?

[seadogg]

In yacht racing windage is the positional advantage of being upwind from an opponent. Ditto in old time sea battles.

[Psybbo]

ubasses meant wastage

[ubasses]

I did Sibton, my brain and fingers don't seem to work together.

[seadogg]

Rubbish! getting mixed with wind gauge