SMTM has a follow-up post that goes into how confusing citrus classifications are.
In particular:
The British called all citrus “lime” or “lemon” interchangeably (like you say).
Lemons can be green and limes can be yellow, so you can’t clearly distinguish based on color.
We still use the word “lime” for a bunch of different kinds of citrus, so we’re not that much better.
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SMTM has a follow-up post that goes into how confusing citrus classifications are.
In particular:
The British called all citrus “lime” or “lemon” interchangeably (like you say).
Lemons can be green and limes can be yellow, so you can’t clearly distinguish based on color.
We still use the word “lime” for a bunch of different kinds of citrus, so we’re not that much better.