It is common to distinguish two aspects, meaning and denotation, such phrases as "the author of Waverley."
"Mysticism and Logic and Other Essays"
Bertrand Russell
Thus when we say "Scott is the author of Waverley" or "men are the same as featherless bipeds," we are asserting an identity of denotation, and this assertion is worth making because of the diversity of meaning.
"Mysticism and Logic and Other Essays"
Bertrand Russell
The denotation, I believe, is not a constituent of the proposition, except in the case of proper names, i.
"Mysticism and Logic and Other Essays"
Bertrand Russell