Grandfather vs. Grandparent

Grandfathernoun

A father of someone’s parent.

Grandparentnoun

the parent of someone's parent

Grandfathernoun

(by extension) A male forefather.

Grandparentnoun

a parent of your father or mother

Grandfatherverb

To retain existing laws or rules only for people or organizations previously affected by them, and to apply new laws or rules to the unaffected people or organizations.

Grandparent

Grandparents are the parents of a person's father or mother – paternal or maternal. Every sexually-reproducing living organism who is not a genetic chimera has a maximum of four genetic grandparents, eight genetic great-grandparents, sixteen genetic great-great-grandparents, thirty-two genetic great-great-great-grandparents, etc.

Grandfatherverb

To retain existing laws or rules for (a person or organization previously affected by them).

Grandfathernoun

A father's or mother's father; an ancestor immediately after the father or mother in lineal ascent.

Grandfathernoun

the father of your father or mother

Grandfathernoun

the father of one's father or mother.

Grandfathernoun

the person who founded or originated something

‘Freud is often called the grandfather of psychoanalysis’;

Grandfatherverb

exempt (someone or something) from a new law or regulation

‘smokers who worked here before the ban have been grandfathered’;