First and Tester

First adjective - Coming before all others in time or order.

Tester and first are semantically related In some cases you can use "Tester" instead an adjective "First".

Nearby Word: firstly

Tester noun - Someone who administers a test to determine your qualifications.

First and tester are semantically related in preliminary topic. Sometimes you can use "First" instead an adjective "Tester", if it concerns topics such as introductory.

Nearby Words: test, testing, tested, testable