soul

Which Means:

The spiritual part of people or animals. (Homonym of 'sole')

Some people believe animals have souls. What do you think?

Don't forget the U in 'soul' and your soul is in you.

The underside of something, especially the foot or a shoe. (Homonym of 'soul')

I walked so much there is a hole in my shoe sole! I must take it to be fixed.

'Sole' also means the only one of: Grace was the sole survivor of the plane crash and walked away unharmed.