Coordinate Conjunctions are grouped together according to their meaning into the following classes:

1. Those that merely join : and, as well as, both . . . and.

In such sentences as Both Mary and her sister are pleased, it is the custom to consider the two words both. . . and as a connective. However, both was originally a pronoun with the following nouns as appositives and it may still be so considered. In case this is done, and alone is the conjunction.

2. Those that imply a choice: or, nor, either . . . or, and neither . . . nor.

Either and neither in such expressions as Either Anna or Mary and Neither Anna nor Mary were once pronouns with the following nouns as appositives, and may still be so considered. In this case what are the conjunctions?