The term "inner parts" refers to the most central and pivotal subjects of a given context. Antonyms for "inner parts" might include "peripherals", "surface-level", "superficial", or "external". These exclusive terms describe aspects that are less essential or less integral to the overall subject, often serving more as secondary details. While "inner parts" suggest depth, complexity, and importance, these antonyms describe things that are more casual, frivolous, or temporary. Though each word has its own place to describe particular aspects of the given context, it is important to recognize the differences among them to avoid confusion while reading, speaking or writing.