affinity

noun

1. 1

   A natural attraction or feeling of kinship to a person or thing.

2. 2

   A family relationship through marriage of a relative (e.g. sister-in-law), as opposed to consanguinity (e.g. sister).

3. 3

   A kinsman or kinswoman of a such relationship; one who is affinal.

4. 4

   The fact of and manner in which something is related to another.

5. 5

   Any romantic relationship.

6. 6

   Any passionate love for something.

7. 7

   Resemblances between biological populations; resemblances that suggest that they are of a common origin, type or stock.

8. 8

   Structural resemblances between minerals; resemblances that suggest that they are of a common origin or type.

9. 9

   An attractive force between atoms, or groups of atoms, that contributes towards their forming bonds

10. 10

    The attraction between an antibody and an antigen

11. 11

    Tendency to keep a task running on the same processor in a symmetric multiprocessing operating system to reduce the frequency of cache misses

12. 12

    An automorphism of affine space.