haemoptysis vs hemoptysis

haemoptysis and hemoptysis both are nouns.

Word	Noun	Adjective	Verb	Adverb
haemoptysis	Yes	No	No	No
hemoptysis	Yes	No	No	No

As nouns, haemoptysis and hemoptysis are synonyms defined as:

haemoptysis and hemoptysis: coughing up blood from the respiratory tract; usually indicates a severe infection of the bronchi or lungs

haemoptysis (noun)	hemoptysis (noun)
coughing up blood from the respiratory tract; usually indicates a severe infection of the bronchi or lungs	coughing up blood from the respiratory tract; usually indicates a severe infection of the bronchi or lungs