Bronchial asthma and Respiratory illness

Bronchial asthma noun - Respiratory disorder characterized by wheezing; usually of allergic origin.

Respiratory illness and bronchial asthma are semantically related. In some cases you can use "Respiratory illness" instead a noun phrase "Bronchial asthma".

Respiratory illness noun - A disease affecting the respiratory system.

Bronchial asthma and respiratory illness are semantically related. Sometimes you can replace phrase "Bronchial asthma" with "Respiratory illness", this phrases are similar.