n. 25B6; noun a sitting room that was the twin of her own : DUPLICATE, double, carbon-copy, exact likeness, mirror image, replica, lookalike, clone; counterpart, match, pair; informal spitting image, dead ringer.
25B6; adjective
the twin towers of the stadium : MATCHING, identical, matched, paired.
the twin aims of conservation and recreation : TWOFOLD, double, dual; related, linked, connected; corresponding, parallel, complementary, equivalent.
25B6; verb the company twinned its brewing with distilling : COMBINE, join, link, couple, pair.