affinity group 
noun chiefly US
A group of people linked by a common interest or purpose: feminist and lesbian affinity groups...
- In the session we learned at least two important lessons: the need to establish and maintain links with other members of an affinity group and the usefulness of vinegar in dealing with the effects of tear gas.
- An affinity group of older women from Montreal, were the first to approach the fence.
- I quickly began searching for my affinity group.
- palaeogeomagnetic
- palaeogeomorphic
- palaeogeomorphologic
- palaeogeomorphological
- palaeogeomorphology
- palaeogeophysical
- palaeogeophysics
- palaeogeotherm
- palaeogeothermal
- palaeognathous
- palaeograph
- palaeographer
- palaeographic
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- palaeographically
- palaeographist
- palaeography
- palaeogravity
- palaeoherpetologist
- palaeoherpetology
- palaeohydrography
- palaeohydrology
- palaeoichnologic
- palaeoichnological
- palaeoichnology