Truehearted and True

Truehearted adjective - Unwavering in devotion to friend or vow or cause.

True and truehearted are semantically related in trustworthy topic. In some cases you can use "True" instead an adjective "Truehearted", when it comes to topics like staunch.

True adjective - Being exactly as appears or as claimed.

Truehearted and true are semantically related in loyal topic. You can use "Truehearted" instead an adjective "True", if it concerns topics such as staunch.