Faintness and Light-headedness

Faintness noun - The quality or state of lacking physical strength or vigor.

Light-headedness and faintness are semantically related. In some cases you can use "Light-headedness" instead a noun "Faintness".

Light-headedness noun - A lack of seriousness often at an improper time.

Faintness and light-headedness are semantically related. Sometimes you can use "Faintness" instead a noun phrase "Light-headedness".