In plain words
Remembrance of them. Worship of them; this Yajurveda they divided in two. These are the Kṛṣṇa Yajurveda and the Śukla Yajurveda. They have two traditions. One is the Brahma tradition, the other the Āditya tradition. The Brahma tradition is the Śukla Yajurveda. The Āditya tradition is the Kṛṣṇa Yajurveda. The Kṛṣṇa Yajurveda grew in the south of Bhārata, the Śukla Yajurveda in the north of Bhārata.
This Veda has been called by nine names. Śruti, Anusvara, Trayī, Āmnāya, Samāmnāya, Chandas, Svādhyāya, Gama and Āgama. Not without reason did these names come about. Śruti: hearing with śraddhā what the guru says, uttering that sound in just the same way, studying it and so making the Veda grow. That is, studying it by hearing. Reflecting on what has been studied, remembering it and going on nourishing it, this they called Anusvara. Trayī: in former times only these three Vedas, the Ṛgveda, the Yajurveda and the Sāmaveda, were said to be apauruṣeya. The mantras taken out of the Yajurveda and set apart are the Atharvaṇa Veda. So these three Vedas got the name Trayī. Āmnāya: the root ‘mnā’ means ceaseless contemplation and practice. Since it grows by practice, it got the names Āmnāya and Samāmnāya. Chandas: one meaning is to cover over and to spread through. All the Veda mantras are called chandas. The whole of the Sāmaveda is filled with chandas. Svādhyāya. Because the Veda was carried on as a tradition through great-grandfathers, grandfathers and fathers, it got the name Svādhyāya. It is not something one comes to know from books alone. It has grown only through the line of guru and disciple. It came from doing svādhyāya, one generation after another. That is why it got the name Svādhyāya. Gama and Āgama: because it arose from the in-breath and out-breath of God, it got the names Gama and Āgama. In short, all the Vedas are nothing but the form of God's breathing in and breathing out. The great ṛṣis, the seers of the mantras, heard it in eight letters. With just the eight letters a, ka, ca, ṭa, ta, pa, ya and śa they set many kinds of svara upon all the Vedas and developed them into many crores of letters. The great ṛṣis nurtured them in many ways.
These Vedas had many branches and sub-branches. The Ṛgveda had 20 main branches and 21 sub-branches. But unfortunately they have sunk into the womb of time, and now only 3 branches remain.