carshare

As verbs the difference between carpool and carshare

is that carpool is to travel together in such a pool while carshare is to participate in a system of car sharing.

As a noun carpool

is an arrangement whereby several people travel together in the same car in order to save costs, reduce pollution etc.

As verbs the difference between carshare and carshared

is that carshare is to participate in a system of car sharing while carshared is (carshare).

As a verb carshare is

to participate in a system of car sharing.