app - n. a computer program that performs a special function

match - v. to make or see a connection or relationship between (two people or things)

algorithm - n. a set of steps that are followed in order to solve a mathematical problem or to complete a computer process

attract - v. to cause (someone) to choose to do or be involved in something

controversial - adj. relating to or causing much discussion, disagreement, or argument

efficient - adj. capable of producing desired results without wasting materials, time, or energy

metadata - n. a set of data that describes and gives information about other data.

profile - n. a brief written description that provides information about someone or something

sample - n. a small amount of something that gives you information about the thing it was taken from