The English words "and" and "or" are conjunctions, and they have a few different forms in Spanish.
Coordinating conjunctions provide a link between similar words or groups of words, such as nouns, verbs, people, etc.
The Spanish word ni is used in pairs to mean "neither … nor."
The Spanish word según can be a preposition, conjunction, or adverb, but has essentially the same meaning in each case.
Subordinating conjunctions join dependent (subordinate) clauses to main clauses. You can recognize a dependent clause by the fact that it cannot stand alone – its meaning is incomplete without the main clause.