die Oma
grandma
A colloquial and common term for a grandmother, that is, the mother of one's father or mother.
Jeden Sonntag essen wir bei meiner Oma zu Mittag.
Every Sunday we have lunch at my grandma's.

grandma
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grandma
A colloquial and common term for a grandmother, that is, the mother of one's father or mother.
Jeden Sonntag essen wir bei meiner Oma zu Mittag.
Every Sunday we have lunch at my grandma's.

'Oma' (grandma) is the usual affectionate term in everyday life and within the family. The word 'Großmutter' (grandmother) is more formal and is used more in written or official contexts.
Meine Oma backt den besten Kuchen der Welt.
My grandma bakes the best cake in the world.
When talking about your own grandmother, 'Oma' (grandma) is often used like a name without an article, especially after prepositions.
Ich fahre am Wochenende zu Oma.
I'm going to Grandma's this weekend.
The article helps distinguish the meaning. 'Meine Oma' (my grandma) is one's own grandmother. 'Eine Oma' (an old lady/a grandma), on the other hand, often describes any unknown older woman.
Meine Oma kommt heute zu Besuch.
My grandma is coming to visit today.
grandmother
'Oma' and 'Großmutter' can both mean the mother of your own mother or father. 'Oma' is colloquial, personal, and often affectionate. 'Großmutter' sounds more neutral and somewhat more formal, for example in texts, forms, or when speaking in a factual way. Learners may confuse the words because in a family they often refer to the same person. The important point is style: at home, people usually say 'Oma'; in official or factual situations, 'Großmutter' is more likely. 'Oma' can also mean an older woman in general, but that is very colloquial.

Am Sonntag backt meine Oma immer einen Kuchen.
On Sundays, my grandma always bakes a cake.
Für den Stammbaum schreibt Lisa den Namen ihrer Großmutter auf.
For the family tree, Lisa writes down her grandmother's name.