Acting out and Sing the blues

Acting out noun - A (usually irritating) impulsive and uncontrollable outburst by a problem child or a neurotic adult.

Sing the blues and acting out are semantically related. In some cases you can use "Sing the blues" instead a verb "Acting out".

Acting out and sing the blues are semantically related. Sometimes you can use "Acting out" instead a verb phrase "Sing the blues".