Nominalization is briefly making nouns or noun phrases by adding affixes to words. This conversion is mostly from a verb or an adjective into a noun. In some cases, the original word's morpheme is preserved, however, in most cases there is a morphological change during the conversion.Also See:Phoneme and Morpheme
Here is a list of common noun-forming suffixes
-tion / ion
-er / ar / or
|mile / mileage|
Africa / African
neglect / negligence
invite / invitation
deficient / deficiency
free / freedom
visit / visitor
brother / brotherhood
active / activist
active / activism
able / ability
abolish / abolishment
mad / madness
citizen / citizenship
honest / honesty
It can also be used to form noun phrases from clauses.
Because people hunt tigers in large numbers
they are facing the risk of extinction.
Because of people’s hunting tigers in large numbers they are facing the risk of extinction.
As nominalization helps you avoid repetition, it makes the text more concise thereby making your writing more abstract and more formal.
House prices are rising rapidly. As a result, first time buyers are having difficulty buying a house.
Due to the rapid increase in house prices, first time buyers are having difficulty buying a house.
The second sentence contains a nominalized expression.