| quarantine(noun, verb) |
| queen(noun, verb) |
| rapport(noun, alliance, affiliation, collaboration, confederation) |
| reciprocity(noun, alliance, affiliation, collaboration, confederation) |
| relevance(noun, association, bearing, affinity, kinship) |
| resemblance(noun, association, bearing, affinity, kinship) |
| sameness(noun, association, bearing, affinity, kinship) |
| sexy |
| similarity(noun, association, bearing, affinity, kinship) |
| solidarity(noun, alliance, affiliation, collaboration, confederation) |
| successor |
| survivor |
| symbiosis(noun, alliance, affiliation, collaboration, confederation) |
| third(noun, adjective) |
| tie(noun, association, bearing, affinity, kinship) |
| tie-up(noun, alliance, affiliation, collaboration, confederation) |
| togetherness(noun, alliance, affiliation, collaboration, confederation) |
| troth(noun, match, matrimony, conjugality, connubiality) |
| unification(noun, alliance, affiliation, collaboration, confederation) |
| unity(noun, alliance, affiliation, collaboration, confederation) |