The word "duad" is a noun that refers to a pair or two items of the same kind. It comes from the Latin word "duo," which means "two."
In more advanced contexts, "duad" can be used in fields like mathematics or philosophy to discuss pairs of elements or concepts that are connected or interdependent.
While "duad" specifically refers to two items of the same kind, it can sometimes be used more broadly to describe any situation where two elements are considered together.
There are no specific idioms or phrasal verbs containing "duad," as it is a less common term. However, you might hear phrases like "two peas in a pod," which means two people who are very similar or close.
Remember, "duad" is not a commonly used word in everyday English, but understanding it can help you describe pairs of similar items in a more specific way.