to put (money) into a business etc; to buy something

contribute money to make money

coins and printed paper used when buying and selling

currency accepted as exchange for goods, services

to give a subsidy to (farmers, a theatre etc)

give money to get started

to keep (a person, thing) from falling or sinking; to keep (a person, health etc) strong; to keep (something) active, existing etc for a long period

keep up, maintain

to agree to take responsibility for all or part of possible loss (by signing an agreement about insurance)

endorse, insure

pledge, promise

pledge, promise