one of a group of people who work together

to give something, especially money, in order to provide or achieve something together with other people

to improve the quality, amount, or strength of something

to deal with, have responsibility for, or be in charge of

to speak to people in other organizations, etc. in order to work with them or exchange information with them

to interest someone in something and keep them thinking about it

to start having a relationship with, or communicating with another person, company, country, or organization

to start using a plan or system

to continue to have; to keep in existence, or not allow to become less