The phrase "a real entity" is correct and usable in written English.
It can be used when discussing something that exists in reality, as opposed to being fictional or abstract.
Example: "In the context of our discussion, a real entity refers to a company that operates in the market, as opposed to a theoretical concept."
Alternatives: "an actual entity" or "a tangible entity".
"It's not a real entity".
This paper presents a novel video augmentation approach: a video recording of a real entity augmented by structured data.
For them, the baby wasn't a real entity – whereas you've been picturing your new addition since the day you saw those two little lines on a stick.
So picture-perfect, in fact, that it could be some Olympian stage-set from the imaginings of Danny Boyle, rather than a real entity.
Rather than dismissing the everyday mind as the source of error, or advocating the realization of a mind that is "no-mind," Neo-Confucians sought to describe the mind as a real, substantial entity in which intelligible ethical and rational principles indwelled, enabling humanity to know both what is, and what is right.
The basic position underlying its elaborations is one of extreme philosophical realism: it is assumed that the structure of reality corresponds so exactly to the way in which the mind works that there is a separate real entity corresponding to every distinction that it can make.
The stock example of a conventionally real entity is the chariot, which we take to be real only because it is more convenient, given our interests and cognitive limitations, to have a single name for the parts when assembled in the right way.
To imagine in this sense is to stand in some mental relation to a representation of an (imaginary or real) entity or state of affairs.
Interpretive analysis is also illustrated in the nineteenth century by Bentham's conception of paraphrasis, which he characterized as "that sort of exposition which may be afforded by transmuting into a proposition, having for its subject some real entity, a proposition which has not for its subject any other than a fictitious entity" [Full Quotation].
