Looking up...
The room was filled with soft light from the window.
The gentle brightness from the window illuminated the room.
illumination or brightness
She turned on the light to read the book.
She switched on the illumination to read the book.
Can refer to natural (sunlight) or artificial (lamp) sources.
not heavy in weight
The suitcase was surprisingly light.
The suitcase was unexpectedly not heavy.
Opposite of 'heavy' when describing weight.
to ignite or set on fire
He lit a candle before dinner.
He ignited a candle before the meal.
Commonly used with 'match' or 'candle'.
The meaning of 'light' depends heavily on context. Pay attention to whether it's used as a noun, adjective, or verb.
As a noun, 'light' refers to illumination. As an adjective, it describes something not heavy.
Old English 'lēoht', from Proto-Germanic 'leuh-tom', related to 'lēoht' (light) and 'lēohtian' (to shine).
Can function as a noun, adjective, or verb depending on context. The meaning is often clear from context.