Numeration
Convenience (noun) Synonym: Comfort
The quality of being useful, easy or suitable for somebody
We have provided seats for the convenience of our customers.
Conviction (noun) Synonym: Belief
Conviction (for something) the act of finding somebody guilty of a crime in court; the fact of having been found guilty
She has six previous convictions for theft.
He plans to appeal against his conviction.
Feats (noun) Synonym: Accomplishment
An action or a piece of work that needs skill, strength or courage
The tunnel is a brilliant feat of engineering.to perform/attempt/achieve astonishing feats
That was no mean feat (= it was difficult to do)
Hindrance (noun) Synonym: Obstacle
A person or thing that makes it more difficult for somebody to do something or for something to happen
To be honest, she was more of a hindrance than a help.
The high price is a major hindrance to potential buyers.
The act of making it more difficult for somebody to do something or for something to happen
They were able to complete their journey without further hindrance.
Indigenous (adjective) Synonym: Native
Belonging to a particular place rather than coming to it from somewhere else
The indigenous peoples/languages of the area indigenous to…
The kangaroo is indigenous to Australia.
Indispensable (adjective) Synonym: Essential
Too important to be without
Cars have become an indispensable part of our lives.
Indispensable to somebody/something
She made herself indispensable to the department
Indispensable for something/for doing something
A good dictionary is indispensable for learning a foreign language.
Numerate (adjective) Synonym: Counting
Having a good basic knowledge of mathematics; able to understand and work with numbers
All students should be numerate and literate when they leave school.
Paramount (adjective) Synonym: Predominant
More important than anything else
This matter is of paramount importance.
Safety is paramount.
Pebbles (noun) Synonym: Boulder
A smooth, round stone that is found in or near water
a pebble beach