a situation; an environment
The poor conditions at the refugee camp, including lack of proper sanitation, led to severe illness.

to find out
Archaeologists are constantly trying to discover new knowledge.

to say what you think is likely or probable
Does anyone have a guess as to where we turn after the traffic light?

a cut and polished precious stone like a diamond, ruby, sapphire, etc.
My mother keeps her valuable jewels in a safe.

a thickness of some material laid on or spread over a surface
There was a thin layer of snow on the ground when I woke up in the morning.

one or two parts of the body which fill and empty with air when you breathe
When you drown, your lungs fill with water.

to make
I have produced many pamphlets for you to use

two-thirds of a whole
I need to add two-thirds of a cup of milk to the recipe.

of value or worth
My father was very upset because the vase that I broke was extremely valuable.

any plant having a long, slender stem that trails or creeps on the ground or climbs by winding itself around a support
There were several bunches of grapes growing on the vine.