Comparative means involving a comparison between two or more things to see how they're similar or different. When you make a comparative study of two books, you examine them side by side, noting what they share and how they differ.

In grammar, comparative forms of adjectives and adverbs show degrees of difference. “Faster” is the comparative form of “fast,” used when comparing two runners: “Maria is faster than James.” “More carefully” is the comparative form of “carefully.” You use these forms specifically when comparing two things, not three or more (that's when you'd use the superlative form, like “fastest”).

The word also describes approaches that look across examples. A comparative religion class studies multiple faiths to understand what they have in common and how they differ. Scientists use the comparative method when they study similar situations to find patterns, like comparing how different plants respond to sunlight or how various materials conduct heat.

When you think comparatively, you're always asking, “How does this relate to that?” It's like holding two things up to the light to see them more clearly. A comparative approach helps you understand each thing better by seeing it in relation to something else.