How is Selenium better than Cucumber in automation?

A cucumber is a tool based on Behavior Driven Development (BDD) framework which is used to write acceptance tests for the web application. It allows automation of functional validation in easily readable and understandable format (like plainEnglish) to Business Analysts, Developers, Testers, etc.

Selenium–cucumber is a behavior driven development (BDD) approach to write automation test script to test Desktop Web and Android Web, Apps . It enables you to write and execute automated acceptance, unit tests. It is cross-platform, open source and free.

Cucumber is a software tool used by computer programmers for testing othersoftware. It runs automated acceptance tests written in a behavior-driven development (BDD) style. … As such, Cucumber allows the execution of feature documentation written in business-facing text.