Erupt vs. Irrupt

Eruptverb

(intransitive) To eject something violently (such as lava or water, as from a volcano or geyser).

Eruptverb

(intransitive) To burst forth; to break out.

Eruptverb

To spontaneously release pressure or tension.

Eruptverb

To cause to burst forth; to eject; as, to erupt lava.

Eruptverb

To eject something, esp. lava, water, etc., as a volcano or geyser; as, when Mount Saint Helens erupted, some people were taken by surprise.

Eruptverb

To burst forth; to break out, as ashes from a volcano, teeth through the gums, etc.; as, the third molar erupts late in most people, and in some persons does not occur at all.

Eruptverb

start abruptly;

Eruptverb

erupt or intensify suddenly;

Eruptverb

start to burn or burst into flames;

Eruptverb

as of teeth, for example;

Eruptverb

become active and spew forth lava and rocks;

Eruptverb

force out or release suddenly and often violently something pent up;

Eruptverb

appear on the skin;

Eruptverb

become raw or open;

Eruptverb

(of a volcano) become active and eject lava, ash, and gases

Eruptverb

be ejected from an active volcano

Eruptverb

(of an object) explode with fire and noise

Eruptverb

break out suddenly and dramatically

Eruptverb

give vent to anger, amusement, etc. in a sudden and noisy way

Eruptverb

(of a spot, rash, or other mark) suddenly appear on the skin

Eruptverb

(of the skin) suddenly develop a spot, rash, or mark

Eruptverb

(of a tooth) break through the gums during normal development

Irruptverb

(transitive) To break into.

Irruptverb

(intransitive) To enter forcibly or uninvited.

Irruptverb

(intransitive) To rapidly increase or intensify.

Irruptverb

enter uninvited;

Irruptverb

erupt or intensify suddenly;

Irruptverb

increase rapidly and in an uncontrolled manner;

Irruptverb

enter somewhere forcibly or suddenly

Irruptverb

(of a bird or other animal) migrate into an area in abnormally large numbers.