Facile and Not difficult

Facile adjective - Having or showing a lack of depth of understanding or character.

Not difficult and facile are semantically related in effortless topic. In some cases you can use "Not difficult" instead an adjective "Facile".

Facile and not difficult are semantically related in clear topic. You can use "Facile" instead an adjective phrase "Not difficult", if it concerns topics such as effortless.