シグナルshigunaru

1. nounsignal

• Synonym信号しんごうNeutralThe most versatile term, for signals of every kind and traffic lights. 「シグナル」 also covers real signals and devices but often means a figurative sign, as in 「危険のシグナル」.
• Synonym合図あいずNeutralA prearranged sign or cue between people, as in 「合図を送る」. It does not refer to signal devices or traffic lights.

For traffic lights and communication signals, use 「信号」. 「シグナル」 also names actual signals and signal devices, but is often figurative — a sign or hint of something, as in 「危険のシグナル」. For a cue between people, use 「合図」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 信号しんごう。合図あいず。
2. 何なんらかの信号しんごうを出だす機械きかい。信号機しんごうき。