haemothorax vs hemothorax

haemothorax and hemothorax both are nouns.

Word	Noun	Adjective	Verb	Adverb
haemothorax	Yes	No	No	No
hemothorax	Yes	No	No	No

As nouns, haemothorax and hemothorax are synonyms defined as:

haemothorax and hemothorax: accumulation of blood in the pleural cavity (the space between the lungs and the walls of the chest)

haemothorax (noun)	hemothorax (noun)
accumulation of blood in the pleural cavity (the space between the lungs and the walls of the chest)	accumulation of blood in the pleural cavity (the space between the lungs and the walls of the chest)