Second, minute, hour, day, week, month, year, decade, century, millenia, era, lifetime.
Everlasting, long, short, intriguing, interesting, analogue, digital, etc. you could go on!
apportunity
root word
use the word vintage
remote
Yes, as long as you use the word to describe another word in the sentence, original is an adjective. For example, in the sentence "This is an original painting by van Gogh." the word "original" is an adjective. If, however you use the word to describe the entire item as in "This is an original.", it is a noun.
a wealthy family.
Atom is the word used to describe a single unit of an element by all professional scientists. That is the only word you should use.
the square unit of....!
The sentence is not right. It does not use the structure English-speaking countries would use, especially the word leisure. We use the word time to describe all kinds of 'time'. Instead, you should write: When you get some time, call me. When you have time, call me. Call me when you have time.
This is known as the 'Incarnation' from the Latin In Carnes (becoming flesh)
Candy uses the word tart to describe curleys wife
Cavemen/women knew of gravity. Sir Isaac Newton was the first to use the word "gravity" to describe the action of a falling object toward the Earth.
We can use metres or centimetres.
length
length
length
grams (G)
Light years