It is a noun. It is the tube that extends from your mouth to your stomach.
i have no clue
Yes
Oesophageal carcinoma is a cancer which occurs in oesophagus. It usually occurs in cells at lower part of oesophagus.
crop
...I believe this is a misspelling of the word "oesophagus"...see also oesophagus(also spelled esophagus), also called the gullet, is the part of the gastrointestinal system between the mouth and the stomach....
mouth (oesophagus)
Peristaltic contractions of the oesophagus (part of the gastrointestinal system).
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath