奴

1. Origins, structure, and basic meaning

• Structure: 奴 is read as やつ and is a noun for a guy referred to roughly or for a thing identified colloquially.
• Basic usage: Referring to a rude guy appears in 失礼な奴, while identifying the red thing on a shelf appears in 棚の赤い奴.

2. Common pitfalls and similar expressions

• Person and object uses
  • With a person it can sound dismissive or rough; with an object it colloquially substitutes a feature for the item's name.
• Difference from 人·物
  • Compared with neutral words for a person or thing, this term has a more familiar or rough colloquial tone, so context and audience matter.