burt

As a verb outburst

is to burst out.

As a noun outburst

is a sudden, often violent expression of emotion or activity.

As a proper noun burt is

(male).

As a verb spurt

is to cause to gush out suddenly or violently in a stream or jet.

As a noun spurt

is a brief gush, as of liquid spurting from an orifice or a cut/wound.

As a proper noun Burt is

a given name.