Parallel Construction. Tip #1:
A common writing fault is faulty parallelism. In writing, parallelism is a similarity of construction of adjacent word groups. Faulty parallelism results when words, phrases, or clauses are mismatched.
Here are some examples of faulty parallelism:
Hiking is more fun than to swim.
“Hiking” is a verbal noun. “To swim” is an infinitive. Better:
Hiking is more fun than swimming.
To hike is more fun than to swim.