"Rife" is an adjective, not a noun. It means widespread or abounding, such as "The game was rife with errors."
The term 'rife' has a couple of senses: 1: excessively abundant; 2: most frequent or common
life, knife, strife, wife
Rife is an adjective. It has no singular or plural form
Rife = Abundant, filled with It was so dark and clear that the sky was rife with stars.
Strife is a term used in the webcomic Homestuck, used to name a fight sequence similar to a turn based fighting RPG.