Aptitude and Acumen

Aptitude noun - A habitual attraction to some activity or thing.

Acumen and aptitude are semantically related in intellect topic. In some cases you can use "Acumen" instead a noun "Aptitude", when it comes to topics like genius, mentality.

Acumen noun - Exceptional discernment and judgment especially in practical matters.

Aptitude and acumen are semantically related in intellect topic. Sometimes you can use "Aptitude" instead a noun "Acumen", if it concerns topics such as genius, mentality.