What is lisaaniya and shafawiyya plz?

what is lisaaniya and shafawiyya plz?
Lisaan, means tongue.  Shafawi means lips or oral.  Shafawi letters refers to letters which are articulated from the lips.  Ikhfa' Ash-shafawi refers to the meem and ba' and the hiding of the meem with no vowel when it meets the ba'.  Both the meem and the ba' are articulated from the two lips.  So lisaaniyaa (not a term we are used to) means relating to the tongue and shafawiyya means pertaining to the lips.