Malformation vs Irregularity - What's the difference?

As nouns the difference between malformation and irregularity

is that malformation is an abnormal formation while irregularity is (countable) an instance of being irregular.

(en noun)

An abnormal formation.

(teratology) An abnormal developmental feature of offspring.

(countable) An instance of being irregular.

(uncountable) The state or condition of being irregular, or the extent to which something is irregular.

(countable) An object or event that is not regular or ordinary.

an irregularity of surface

(countable) A violation of rules.

An investigation of the irregularities in the company's accounts uncovered a large-scale fraud.

* regularity