軽度の

Both can mean 'mild' or 'light', but 軽度の (keido no) specifically refers to the degree or extent of something. For example, 軽度の風邪 (keido no kaze) means 'a mild cold'. 軽い (karui) can refer to physical lightness, emotional lightness, or also mildness, but 軽度の is more formal and precise when talking about a degree.

Not typically. 軽度の is generally used for things like symptoms, conditions, or situations. For mild flavors, you'd usually use something like あっさりした (assarishita) for a light, refreshing taste, or 薄味 (usuaji) for lightly seasoned.

It's more commonly heard in formal contexts, medical settings, or news reports. In casual conversation, you might hear simpler phrases or just 軽い (karui), depending on the context. However, it's definitely a useful word to know.

It functions as an adjective. You can say 軽度の[noun]. For example, 軽度の頭痛 (keido no zutsuu - mild headache) or 軽度の損傷 (keido no sonshou - mild damage).

Depending on the nuance, 軽い (karui) can sometimes be a synonym, especially when describing a mild symptom. For a gentle or soft degree, you might also consider 微かな (kasukana), but it's not a direct equivalent and focuses more on faintness.

It's less common for direct emotional states. You might hear it in the context of mental health conditions, like 軽度のうつ病 (keido no utsubyou - mild depression), but for general mild feelings like 'mildly annoyed', you'd use different expressions.

Not necessarily. It just describes the current degree or severity. A mild condition could be temporary or chronic. The word itself doesn't carry a temporal meaning.

The kanji 軽 (kei) itself means light, slight, or easy. 度 (do) means degree, extent, or limit. So, 軽度の literally combines these to mean 'light degree'. While 軽い (karui) uses just 軽, 軽度の is a specific compound for 'mild (degree)'.

The opposite would typically be 重度の (juudo no), meaning 'severe' or 'serious (degree)'. For example, 重度の風邪 (juudo no kaze - severe cold).

Yes, you can. For instance, 軽度のインフレ (keido no infure - mild inflation) or 軽度の変化 (keido no henka - mild change). It works well for describing the extent of various situations or conditions.