The condition or quality of being regular; as, regularity of outline(noun)
A particular regular occurrence(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "regularity" in a sentence
"Would you have me believe that this regularity is due to coincidence rather than design?"
"Your phrase 'comfortable regularity' is almost as good as 'quiet desperation' and should be in a pink floyd song."
"The reason I picked 'exhibitions' is because it's a defined type of thing, and has a certain regularity with the type of facets you might pick to build the service around (dates, subject, venue, type of exhibition, and so on)."