The /ʒ/ sound is spelled with <ge> in words of French origin or <su> in leisured and <zu> in azure. The /n/ sound is spelled with <n> or <nn>.
This is a contrast between a fricative and a nasal continuant, both in the same region of the mouth and both voiced. It is not a problem.
azure anna azures annas beige bane leisured Leonard luge loon luges loonies rouge rune