na-adjective
Describes something that is limited to a specific area or part, often used for pain, weather phenomena, or economic conditions.
この地域では局部的な大雨が予想されています。
Localized heavy rain is expected in this area.
彼は腰に局部的な痛みを感じている
He feels a localized pain in his lower back.
部分的 means 'partial' or 'in part', focusing on incompleteness, whereas 局部的 emphasizes being confined to a specific location.
Derived from 局部 (local part) + 的 (-like, -ish), forming an adjectival noun meaning 'localized'.