Light in the head and Light-headed

Light-headed and light in the head are semantically related In some cases you can replace phrase "Light-headed" with "Light in the head", this phrases are similar.

Light-headed adjective - Having a feeling of being whirled about and in danger of falling down.

Light in the head and light-headed are semantically related in dizzy topic. You can use "Light in the head" instead an adjective phrase "Light-headed".