na-adjective
Describes qualities or characteristics that are naturally present from the beginning, not acquired. Often used in philosophical or formal contexts.
言語能力は人間に本有的なものだ。
Language ability is innate to humans.
彼
His inherent kindness puts those around him at ease.
先天的 means 'congenital' or 'inborn' and is commonly used in medical or genetic contexts, whereas 本有的 is broader and can refer to inherent qualities of objects or concepts.
Compound of 本有 (ほんゆう, 'inherent existence') + 的 (てき, '-like'). The exact historical derivation is uncertain, but the term is used in philosophical discourse to describe essential, innate properties.