Close likeness, or connection.

密切关系。

Relationship by marriage, in distinction to relationship by blood.

姻亲关系(与血亲有别)。

A natural liking for a person; also, one of two persons naturally drawn to each other.

吸引力；缘份；相处得来的人。

Physical or chemical attraction.

(物理或化学的)亲和力；亲和性。