The logical use of conjunctions is referred to as subordination and/or coordination (depending on the types of conjunctions used, i.e., subordinating or coordinating conjunctions).

Examples:

People are attracted to this restaurant so the food is fantastic here.

Correct sentence: People are attracted to this restaurant because the food is fantastic here.

These conjunctions are used to link two or more words, clauses, phrases, or sentences of equal importance.
For example: and, or, but, for, yet, so

Examples:

We will find the number and call the service center.

These conjunctions are used to link a dependent clause to an independent clause.
For example: after, although, unless, since, because, till, before

Examples:

The bus won’t start because the battery is low.