Meaning and Usage
The prefix 両～ (りょう～) means "both" or "two sides" and is used to indicate that something involves or applies to two entities, people, or sides simultaneously. It is often attached to nouns related to people, sides, or parts, such as 両親 (both parents), 両手 (both hands), 両方 (both sides), etc.
Common Collocations
- 両親 (りょうしん): both parents
- 両手 (りょうて): both hands
- 両方 (りょうほう): both sides, both things
- 両側 (りょうがわ): both sides (of a street, river, etc.)
Register and Nuance
両～ is neutral and commonly used in both formal and informal contexts. It emphasizes inclusiveness of two parties or parts. It is different from どちらも or 両方 in that 両～ is a prefix attached directly to a noun.
Common Mistakes
Learners sometimes confuse 両～ with just 両方, but 両～ is a prefix and must be attached to a noun, while 両方 can stand alone as a noun meaning "both sides/things." For example, 両親 (both parents) vs. 両方の親 (both parents, but less common).
Summary
Use 両～ when you want to express "both" in a compound noun form, especially when referring to two people, parts, or sides. It is a very common and useful prefix in everyday Japanese.