What is meant by "Nuemonia" on what organ it effects and Reasons for said Disease, It is curable Permanently.!

My GrandDaughter is Suffering with frequentCold and Cough . On consulting the Doctor after Diagnostic Tests like Blood Test and "X" Ray it was Diagnoseas Nuemonia. Kindly enlighten us What is meant by "Nuemonia" on what organ it effects and Reasons for said Disease, It is curable Permanently. If so what are the Pre-Cautions to be taken. If any body has got idea about Herbal /Homeo Remidies which are not having any side effects. Kindly help me to suggest the treatment in Herbal/Homeopathy, with the name of the Homeo Medicines and usage and also Herbals for preparation of the Herbal Medicine for using on our own.!