Can I use "portmanteau" and "notation" in one sentence as ...
Can I use "portmanteau" and "notation" in one sentence as "Both these portmanteau notations have similarities and also differences.."?

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I'm confused by the meaning of the sentence. Also, I don't see portmanteau anywhere in the sentence?

Answer

There is usually very little rules against using words in the same sentence. It is very often that wording of a single phrase must be precise, but when it comes to whole sentences there are no such exact formulas.

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