母子 mǔzǐ mother and child
mother and child; parent and subsidiary (companies); principal and interest
How to remember 母子: 母 mother + 子 child = mother and child.
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How it is used
- Compound noun used the same way: 母子俩 (mǔzǐ liǎ, mother and child, the two of them).
- Typically implies a son given 子's core meaning, though it can loosely cover "mother and child" in general; contrast with 母女 (mǔnǚ), specifically mother and daughter.