In addition to cancer of the head , mouth , neck , throat , oesophagus , other aerodigestive tract cancers , and dental disease areca nut , the main ingredient in gutka is known to cause severe oral mucosal disorders .
ADP NOUN ADP NOUN ADP DET NOUN , NOUN , NOUN , NOUN , ADJ , ADJ ADJ NOUN NOUN , CCONJ ADJ NOUN NOUN NOUN , DET ADJ NOUN ADP NOUN AUX VERB PART VERB ADJ ADJ NOUN NOUN .