relation - an abstraction belonging to or characteristic of two entities or parts together

rapport, resonance - relation of mutual understanding or trust and agreement between people

sympathy - a relation of affinity or harmony between people; whatever affects one correspondingly affects the other; "the two of them were in close sympathy"

relation - an abstraction belonging to or characteristic of two entities or parts together

phylogenetic relation, affinity - (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts; "in anatomical structure prehistoric man shows close affinity with modern humans"

filiation, line of descent, lineage, descent - the kinship relation between an individual and the individual's progenitors

kinship by marriage, affinity - kinship by marriage or adoption; not a blood relationship

blood kinship, consanguinity, cognation - related by blood

parentage, birth - the kinship relation of an offspring to the parents

fatherhood, paternity - the kinship relation between an offspring and the father

motherhood, maternity - the kinship relation between an offspring and the mother

sisterhood, sistership - the kinship relation between a female offspring and the siblings

brotherhood - the kinship relation between a male offspring and the siblings

marital bed, marital relationship - the relationship between wife and husband