laryngotracheobronchopneumonitis

As nouns the difference between croup and laryngotracheobronchopneumonitis

is that croup is the top of the rump of a horse or other quadruped or croup can be (pathology) an infectious illness of the larynx, especially in young children, causing respiratory difficulty while laryngotracheobronchopneumonitis is a respiratory disease, a form of croup.

As a verb croup

is (obsolete|outside|dialects) to croak, make a hoarse noise.

As nouns the difference between disease and laryngotracheobronchopneumonitis

is that disease is (pathology) an abnormal condition of the body or mind that causes discomfort or dysfunction; distinct from injury insofar as the latter is usually instantaneously acquired while laryngotracheobronchopneumonitis is a respiratory disease, a form of croup.

As a verb disease

is (obsolete) to cause unease; to annoy, irritate.

As an adjective respiratory

is relating to respiration; breathing.

As a noun laryngotracheobronchopneumonitis is

a respiratory disease, a form of croup.