The meaning of "Prospect"

[Hommeaffaire]

Hello,

Coud you explain to me the meaning of these words ?

Prospect's perspective ( From the prospect's perspective)
My prospect's company (If i were an executive in my prospect's company)

Why they have( 's)

Thank you very much

[Milanya]

The meaning of the word prospect can be looked up in a dictionary http://www.onelook.com/?w=prospect&ls=a .
The meaning of a word in a certain context can be figured out from a context, which you have not given.