What they share
Both are Greek in origin. Both are two syllables and end in a soft vowel sound. Both travel internationally with ease. Both pair well with longer middle names.
Pick Chloe if…
Pick Chloe if you want the botanical, pastoral meaning. Chloe means 'green shoot' or 'young blooming' and has mythological ties to Demeter. It carries a soft, spring-like energy.
Pick Zoe if…
Pick Zoe if you want the vital, more energetic meaning. Zoe means 'life' in Greek, which is one of the most direct and lovely name-meanings there is. It lands with a little more sparkle than Chloe.
Chloe is softer; Zoe is brighter. Both have proved they age well. If you are drawn to nature-influenced meanings, Chloe wins; if you want the more concentrated one-word virtue, Zoe wins.