I. CO-ORDINATE.—These conjunctions join sentences of equal grammatical rank (ordo), that is, each sentence is grammatically independent of the other.
They are generally divided into FIVE classes:—
(1) Copulative (link) conjunctions are those which connect both the sentences and the meaning.
et, -quĕ, ac, atque ... and.
et ... et, -que ... -que (poet.) ... both ... and.
ĕtĭam, quŏque ... also.
Divide et impera.
Divide and control.
(2) Disjunctive conjunctions join together the sentence but they disjoin or separate from each other the thoughts conveyed.
aut ... aut, vĕl ... vĕl (vĕ) ... either ... or.
sĭve (seu) ... seu ... whether ... or.
nĕc (nĕque) ... nec (neque) ... neither ... nor.
aut vincemus aut moriemur.
We will either conquer or die.
(3) Adversative conjunctions oppose two statements to each other.
sĕd, vērum, vērō, cētĕrum ... but.
autem, tămen ... however.
ăt ... but, on the other hand.