quag

As a pronoun qual

is .

As a noun quag is

(obsolete) quagmire; marsh; bog.

In obsolete|lang=en terms the difference between quar and quag

is that quar is (obsolete) a quarry while quag is (obsolete) quagmire; marsh; bog.

As nouns the difference between quar and quag

is that quar is (obsolete) a quarry while quag is (obsolete) quagmire; marsh; bog.

As a symbol qua

is have you news of (call sign)?.

As a noun quag is

(obsolete) quagmire; marsh; bog.