MGNT vs TR vs LXX

All the above are greek texts, but what exactly is the difference and how is each one to be used?

mGNT

This terms stands for morphological greek new testament. The term "morphological" is a linguistic term and refers to the study of words, including the principles by which they are formed and how they relate to one another within a language. most approaches to morphology investigate the structure of words in terms of morphemes, which are the smallest units in a language with some independent meaning. Morphemes include roots that can exist as words by themselves, but also categories such as affixes that can only appear as part of a larger word.

This version is also referred to as the "Critical Text"

Hence, this vers

Book recommendation - Morphology of Biblical Greek by William D Mounce