anger vs lose one's rag

anger

verb

To become angry.
To cause such a feeling of antagonism in.

noun

A strong feeling of displeasure, hostility or antagonism towards someone or something, usually combined with an urge to harm, often stemming from perceived provocation, hurt, or threat.

lose one's rag

verb

To become angry.

How often have the words anger and lose one's rag occurred in a corpus of books? (source: Google Ngram Viewer )