affinity /ə-finˈi-ti/

1. Relationship by marriage
2. Relationship of sponsor and godchild
3. Natural or fundamental relationship, esp common origin
4. Attraction
5. A spiritual attraction between two people
6. A person whose attraction for another is supposed to be of this kind
7. Nearness (obsolete)
8. The extent to which a compound of a functional group is reactive with a given reagent (chem)
9. A measure of the strength of interaction between antigen and antibody or between a receptor and its ligand (immunology)

affinˈitive adjective

affinity card noun

A credit card linked to a particular charity, to which the issuing bank pays a fee on issue and subsequent donations according to the credit level

affinity group noun

A group of people with a common aim or interest

• katydids
• katzenjammer
• katzenjammers
• kaugh
• kaughs
• kaumatua
• kaumatuas
• kauri
• kauri gum
• kauri-pine
• kauri-pines
• kauris
• kava
• kaval
• kavas
• kavass
• kavasses
• kaw
• kawaii
• kawakawa
• kawakawas
• Kawasaki disease
• kawed
• kawing
• kaws