Well- formed and Well-formed

Well-formed and well- formed are semantically related In some cases you can use "Well-formed" instead an adjective phrase "Well- formed".

Well-formed adjective - Conforming to the rules of grammar or usage accepted by native speakers.

Well- formed and well-formed are semantically related in pertaining to syntax topic. You can use "Well- formed" instead an adjective phrase "Well-formed".