Question

I am no sure about prefix and suffix. I want to know if have rules in which case I need to use NESS or ION in npus or ful, less, able in adjetives.

Thanks

Answer 1

NESS in nouns means state, condition, quality. Ex.: bigness - state or condition.

ION in nouns - condition or action. Ex.: perfection - condition.

Answer 2

FUL in adjectives - the quality that it has or is giving/marked by. Ex.: beautiful - it has qualities of the beauty.

LESS - without smth.

ABLE - ability of smth.