Which is correct? Backyard, back yard, or back-yard?
Expressing comparisons can be tricky. You must be sure that you are always comparing like things. In other words, be sure that your comparisons are parallel:
Fixing a common, but little noticed grammar error: making logically incongruous comparisons. Or, comparing things you don’t mean to compare.
Adjectives and adverbs come in three degrees of comparison: positive, comparative, and superlative. When comparing or contrasting two or more things, we use the comparative or superlative degrees. Avoid the following common errors.