esophageal reflux vs gastroesophageal reflux

esophageal reflux and gastroesophageal reflux both are nouns.

Word	Noun	Adjective	Verb	Adverb
esophageal reflux	Yes	No	No	No
gastroesophageal reflux	Yes	No	No	No

As nouns, esophageal reflux and gastroesophageal reflux are synonyms defined as:

esophageal reflux and gastroesophageal reflux: reflux of stomach contents into the esophagus

Other synonyms of esophageal reflux include oesophageal reflux.

esophageal reflux (noun)	gastroesophageal reflux (noun)
reflux of stomach contents into the esophagus	reflux of stomach contents into the esophagus