Two complete sentences incorrectly joined by a comma make a run-on sentence.
Fragments are incomplete sentences that lack a subject or verb. Run-ons are two or more independent clauses incorrectly joined together without proper punctuation or conjunctions. Comma splices occur when two independent clauses are incorrectly connected with a comma instead of a conjunction or appropriate punctuation.
He won, he had the best score. This is an incorrect or comma splice sentence -- two distinct ideas joined incorrectly by a comma. Either rewrite as two sentences, or change the comma to a semicolon.
Using a comma to join independent clauses that could stand alone as sentences
A run-on sentence occurs when two independent clauses are connected without proper punctuation or conjunctions. A comma splice, on the other hand, happens when two independent clauses are incorrectly joined with a comma but without a coordinating conjunction. Both errors result in choppy or confusing sentences.
Compound sentences are joined by a coordinating conjunction (such as and, but, or, so), a semicolon, or a conjunctive adverb (such as however, therefore).
run-on sentence
It's called a run-on comma splice.
A comma splice is when a two complete sentences are separated by a comma, without a conjunction. This makes it gramatically incorrect. A run-on sentence continues on and on with no clear predicate.
A comma splice is characterized by two independent clauses that are incorrectly joined by a comma. This error occurs when two complete thoughts are separated by a comma without the appropriate conjunction or punctuation.
Fragments are incomplete sentences that lack a subject or verb. Run-ons are two or more independent clauses incorrectly joined together without proper punctuation or conjunctions. Comma splices occur when two independent clauses are incorrectly connected with a comma instead of a conjunction or appropriate punctuation.
He won, he had the best score. This is an incorrect or comma splice sentence -- two distinct ideas joined incorrectly by a comma. Either rewrite as two sentences, or change the comma to a semicolon.
Using a comma to join independent clauses that could stand alone as sentences
A run-on sentence occurs when two independent clauses are connected without proper punctuation or conjunctions. A comma splice, on the other hand, happens when two independent clauses are incorrectly joined with a comma but without a coordinating conjunction. Both errors result in choppy or confusing sentences.
Compound sentences are joined by a coordinating conjunction (such as and, but, or, so), a semicolon, or a conjunctive adverb (such as however, therefore).
contains two or more simple sentences joined by a comma and a coordinating conjunction or by a semicolon> and, but, nor, or for.
A comma splice occurs when two independent clauses are incorrectly joined by a comma without a coordinating conjunction. To identify a comma splice, look for sentences where two standalone thoughts are separated only by a comma. This error disrupts the flow of the sentence and is best corrected by either adding a coordinating conjunction or using a stronger punctuation mark like a semicolon or period.
The coordinating conjunctions that can be used to combine two complete sentences with a comma are "for, and, nor, because, yet, so."