adjoins

"The connection between the two classrooms was established by installing a new phone line. "

"The quotient of two rationals is again a rational."

"The contact between the two teams was fierce during the soccer match. "

"Letters are the elements of written language."

"The living room and dining room adjoin each other."

"To explain a chapter of the Bible."

"Professor Smith, the head of the history department, gave a fascinating lecture on the Roman Empire. "

"We are dining at a new Italian restaurant tonight. "

"The student needed help understanding the algebraic equation on her math homework. "

"My grandmother is living a long and healthy life. "

"Zero, one, −1, 2.5, and pi are all numbers."

"Where does this document belong?"