Englishfor English speakers
millennium
Noun
—
A millennium is a period of time lasting one thousand years.
Mankind invented the first writing systems a few millennia ago.
Lots of animal species have disappeared during the last millennium.
ecosystem
Noun
—
An ecosystem is a large community of living organisms in a particular area.
assessment
Noun
—
An assessment of a person, idea, skill, process, etc. is a judgement or measurement of them.
The results of your recent job assessment are excellent.
The buyers have to make their own assessment of the value.