The Conjunction connects or _joins together_ Sentences; so as out of two
to make one Sentence.
Thus, “You, _and_ I, _and_ Peter, rode to London,” is one Sentence made
up of these three by the Conjunction _and_ twice employed; “You rode to
London; I rode to London; Peter rode to London.” Again, “You _and_ I rode
to London, _but_ Peter staid at home,” is one Sentence made up of three
by the Conjunctions _and_ and _but_: both of which equally connect the
Sentences, but the latter expresses an Opposition in the Sense. The first
is therefore called a Conjunction Copulative; the other a Conjunction
Disjunctive.
The use of Copulative Conjunctions is to connect, or to continue, the
Sentence, by expressing an addition, _and_; a supposition, or condition,
_if_, _as_; a cause, _because_[41], _then_; a motive, _that_; an
inference, _therefore_; &c.
The use of Disjunctives is to connect and to continue the Sentence; but
to express Opposition of meaning in different degrees: as, _or_, _but_,
_than_, _altho’_, _unless_, &c.