In the Portuguese language, there are similar expressions or with identical spellings that often confuse speakers in different situations.
by and by are examples of this type of expression. Both terms have identical spellings but have different meanings.
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see below some examples of the semantic difference, that is, the difference in meaning between these expressions.
on par is a widely used expression and compared to the peer, it is more prominent in the Portuguese language.
On par means being aware, informed or having knowledge of something.
Examples:
The two sentences demonstrate that the subjects are aware of what happened.
It is important to emphasize that abreast it can also indicate something happening at the same time or side by side, pair by pair.
Examples:
In the first and second sentences, it is observed that a par means side by side. Therefore, it can be said that “the senator was side by side with the president” and “the king stood side by side with the queen”.
at par should be used to refer to financial matters, expressing comparisons of currency values and exchange operations.
Therefore, at par means equivalent value or have identical, equal value.
Examples:
In the first sentence, it is seen that at par means equal value. Thus, it can be stated that “the value of the Swiss franc it's the same to that of the euro”.
In the second sentence, it is observed that the pair is expressing contrast between the value of the pound and the value of the dollar. Therefore, in this sentence the intention is to highlight that “the value of the pound it's not the same to the dollar”.
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