不安 is anxious unease about an uncertain outcome, while 緊張 is the physical/mental tautness felt in the moment itself.
不安 means anxiety or unease, close to テンション's rare mental-strain sense, though 不安 emphasizes worry rather than physical tautness.
不安 expresses a vague, objectless unease, whereas 恐れ can be directed at a specific feared thing or event.
不安 is the general word for anxiety or unease about anything, while 心細い specifically conveys the lonely, unsupported feeling behind that anxiety.
不安 describes a stronger, more abstract anxiety that may have no clear cause, whereas 気がかり is usually tied to a particular matter.
不安 describes vague anxiety or unease, whereas 恐怖心 is a sharper, more intense feeling of fear tied to a specific threat.
不安 describes a felt sense of anxiety or insecurity, whereas 懸念 focuses on a specific potential problem being pointed out.
不安 is general anxiety or worry about something, while 動揺 specifically describes the shaken, destabilized feeling caused by a particular shock.
不安 means anxiety or unease, often deeper and longer-lasting than ナーバス, which tends to describe a temporary, reactive nervousness.
不安 is a general sense of worry or unease that need not involve time pressure, while 焦り specifically comes from feeling behind or rushed.
不安 describes vague anxiety or unease about something uncertain, while 怯え describes an immediate, visible fright at something specific.
不安 is the standard modern word for anxiety or unease, while 憂い is more formal and often used in literary contexts.
不安 describes a person's own anxiety or unease, while 物騒 describes an external situation or place that feels unsafe.