The term 'Alpha Counterpart' is a phrase used to describe two entities that are closely related and have similar characteristics. The crossword solution for this term is 'OMEGA, ' which is the last letter of the Greek alphabet. OMEGA is often used to symbolize the end or completion of something, and is often seen as the opposite of Alpha, which is the first letter of the Greek alphabet and is often used to symbolize the beginning or start of something. Therefore, the term 'Alpha Counterpart' can be used to describe two entities that are closely related and have similar characteristics, with one being the beginning and the other being the end.