Relaciones Humanas / Human Relationships

Friendship = Amistad
Friend = Amigo
Best friend = Mejor amigo
Old friend = Viejo amigo
Boyfriend = Novio
Girlfriend = Novia
To be engaged = Estar comprometido
Wife = Esposa
Husband = Esposo
Mate = Compañero
Flatmate = Compañero de apartamento
Classmate = Compañero de clase
Acquaintance = Conocido
Guest = Invitado
Get on well with someone = Llevarse bien con alguien

Professional relationships / Relaciones profesionales
Boss = Jefe
Employer = Empleador
Employee = Empleado
Colleague = Colega
Partner = Socio
Enemy = Enemigo

Family relationships / Relaciones familiares
Mother = Madre
Mom = Mamá
Father = Padre
Dad = Papá
Brother = Hermano
Sister = Hermana
Brethren = Hermanos
Son = Hijo
Daughter = Hija
Aunt = Tía
Uncle = Tío
Cousin = Primo(a)
Niece = Sobrina
Nephew = Sobrino
Grandfather = Abuelo
Grandmother = Abuela
Grandchild = Nieto