Meaning and Usage
"発生" (はっせい) primarily means the occurrence or outbreak of an event, often something sudden or significant like a natural disaster, problem, or phenomenon. It is a formal noun commonly used in news reports, official announcements, and technical contexts.
Common Contexts
You will often see "発生" used with natural disasters (地震の発生 - earthquake occurrence), accidents, or the emergence of issues (問題の発生). It implies something has come into existence or started happening.
Collocations and Patterns
- 発生する: to occur, to happen (used as a verb phrase)
- 問題が発生する: a problem arises
- 事故の発生: occurrence of an accident
- 発生源: source of occurrence
Register and Nuance
"発生" is formal and neutral, suitable for written and spoken Japanese in professional or serious contexts. It is not casual and rarely used in everyday informal conversation.
Common Learner Mistake
Learners sometimes confuse "発生" with "起こる" (おこる), which also means "to happen." "発生" often implies a more formal or technical occurrence, while "起こる" is more general and casual. Use "発生" when referring to events or phenomena in formal contexts.