KATHA is the noun form of the Sanskrit word kath, meaning to speak, describe, narrate or interpret. In religious terminology, kathd stands for exposition, analysis and discussion of a passage from a scripture. It involves a full length discourse on a given text, with a proper enunciation of it and elucidation with anecdotes, parables and quotations, of the underlying spiritual and theological doctrines and ideas. Since scriptural utterances and verses were generally pithy and aphoristic, they needed to be expounded for the laity and there emerged in the Indian tradition forms such as tikd (paraphrase), sabddrlha (gloss) and bhdsya (commentary), with pramdnas or suitable authoritative quotations from religious and didactic works to support the thesis or interpretation.
TIKA, derived from the root tik, a loan word from the aboriginal languages, meaning `to mark` or `to explain`, signifies commentary, exegesis or explanation, especially of a scriptural text. Originally meant to provide a simple paraphrase of the spiritual and mystical revelations, a tika may now embrace an exhaustive analysis and interpretation of the text. Such tikas and commentaries have been part of the Indian religious tradition since ancient times.In tracing the history, reference is made to Yaska Muni (circa 700 BC) who mentions in his Nirukta numerous preceding commentators of the sacred scriptures.