The phrase "used as synonymous" is correct and usable in written English.
It can be used when comparing two words or phrases that have similar meanings. Example: The words "large" and "big" can be used as synonymous to describe size.
Sometimes, the term "fictitious object" is used as synonymous with "nonexistent object".
A dictionary is also used to enable identifying correlated concepts that are used as synonymous on the scoring and validation process.
RPM and DPR can be used as synonymous in this study; however, specialists use RPM term for the cases in which permeability reduction is less compare to DPR.
The term "tertiary structure" is often used as synonymous with the term fold.
Sometimes we call people "beidl"—which means scrotum but is often used as synonymous to dick and like many great nations in the world, we call people asses or assholes.
The fusion of religion and nationalism provides a potent means by which the government can argue for the hegemony of one state based on religion and oppress other religions and political movements at once, labeling them "anti-Hindu," "anti-India," and "anti-national," which are used as synonymous.
I bought into the "fucked up artist" archetype for years and wrote off my drinking and using as synonymous with being a creative human being.
The general term "personalized medicine" has also been used as a synonymous of "pharmacogenomics" to highlight the evaluation of genetic variations to identify patients likely to respond to specific therapies [5].
Depending on the situation, context, and language, the term mushroom is used also as synonymous to any fungus.
For a while, freedom and independence were used as more or less synonymous and interchangeable terms.
The ratio dN/ dS, where dN is the number of non-synonymous nucleotide substitution per non-synonymous site and dS the number of synonymous nucleotide substitution per synonymous site, is used as a proxy for the evolutionary constraints that occur on nucleotide substitution [ 42].
