A Lozenge is a quadrilateral with sides of equal length having two acute and two obtuse angles.
"What is the sum of all the angles on a lozenge?"
Lozenger is obviously a misspelling of the word, lozenge. It is inappropriate and not deemed correct.
Both of these words refer to a hard medicinal candy for soothing your throat.
“Make sure you have a throat lozenge ready in case you have to cough in the middle of the performance.”
‘Lozenge’ is the standard pronunciation and spelling, but you hear ‘lozenger’ in some regional dialects.