pro·pin·qui·ty 
(prə-pĭngkwĭ-tē)
(prə-pĭngkwĭ-tē)n.
1. Proximity; nearness.
2. Kinship.
3. Similarity in nature.
[Middle English propinquite, from Old French, from Latin propinquitās, from propinquus, near; see per1 in the Appendix of Indo-European roots.]