Physiological reaction and Singultus

Physiological reaction noun - An automatic instinctive unlearned reaction to a stimulus.

Singultus and physiological reaction are semantically related. In some cases you can replace term "Singultus" with "Physiological reaction", this terms are similar.

Singultus noun - (usually plural) the state of having reflex spasms of the diaphragm accompanied by a rapid closure of the glottis producing an audible sound; sometimes a symptom of indigestion.

Physiological reaction and singultus are semantically related. You can use "Physiological reaction" instead a noun "Singultus".