Answer: Tahārah means purification from Hadath (ritual impurity) and Khabath (material impurity).

Purification from "khabath" is by removing material impurity from one’s body, clothes, or place of prayer.

Purification from "hadath" is by performing ablution or Ghusl (ritual bath) with pure water, or by performing Tayammum (dry ablution) in case the water is unavailable or it is difficult for one to use it.