And, or, but. Those are the most common.
Conjunctions are important because they help connect words, phrases, and clauses in a sentence to show the relationship between them. They contribute to the coherence and flow of a sentence, allowing for more complex and varied sentence structures. Without conjunctions, writing and speech may sound stilted or disjointed.
conjuctions
A compound sentence is two or more sentences joined by and, or and but. these words are called conjuctions. compound sentences express more than one complete thought.
The other name that we can use for conjunctions is CONNECTORS, ..they connect nouns, adjectives, sentences...etc.
You can combine two or more simple sentences by using conjuctions. Except for very short sentences, you should put a comma before some conjuctions, which are called coordinating conjunctions.They are :forandnorbutoryetso(the mnemonic is fanboys).The subordinating conjunctions allow one independent clause to modify another.They include :afteralthoughasas ifas long asas thoughbecausebeforeeven ifeven thoughifif onlyin order thatnow thatoncerather thansinceso thatthanthatthoughtillunlessuntilwhenwheneverwherewhereaswhereverwhile
or
Yes, it is correct to put a comma before the word "once" when it is used at the beginning of a sentence to indicate a specific time or condition. For example: "Once, I was afraid of heights but now I enjoy rock climbing."
and, nor, or, for
The three conjunctions are coordinating conjunctions, subordinating conjunctions, and correlative conjunctions. Coordinating conjunctions join words, phrases, or independent clauses of equal importance. Subordinating conjunctions introduce dependent clauses that cannot stand alone as complete sentences. Correlative conjunctions work in pairs to connect words, phrases, or clauses with equal weight.
compound subject
The cat and the dog played together in the park.
Correlative conjunctions.