The meaning of the word ‘Veda’ is simply knowledge and not any language. Of course, language is the vehicle of the meaning and is needed. Veda is the person travelling in the vehicle and not the vehicle itself even though the vehicle is needed for travelling. The person travelling in a car can also travel in train or even in an aeroplane. The person is one and the same even though the vehicle changes. Hence, the Veda means the knowledge conveyed by any language. You can’t say that a person travelling in the car alone is the person. If this crucial point is understood, the inter-religious splits will disappear once for all. As long as one maintains the fanaticism of time and religion, he/she cannot realize the real and absolute unimaginable God existing beyond space and time. The four-dimensional space-time model applies only to the creation and not to the Creator, who is beyond this four-dimensional model. This is the essence of the knowledge of old Shankara and modern Einstein. Source - http://www.universal-spirituality.org/msg08072017.html
Veda means knowledge.The Vedas are not compilations of human knowledge. Vedic knowledge comes from the spiritual world,from Lord Sri Krishna. Another name for the Vedas is Shruti. Shruti refers to that knowledge which is acquired by hearing.It is not experimental knowledge. Vedic knowledge is called Sabda Pramana. Originally there was only one Veda.But 5000 years ago Vyasadeva put the Vedas in writing for the people in this age, Kali Yuga. He divided the Vedas into four: Rg,Sama,Atharva and Yajur.