What do you call scientict study of words?

What is made up of 60 copper and 40 tin? What is infill in world geography? What year did the first hail storm happen? What is human selection? What are groups 3-12 collectively known as? Which of these is a fungus plant grass toadstool carnation? Can we see makemake from a telescope? Does the Doppler Effect mean that an observer ahead of a train hears the train at a higher frequency sound than an observer behind the train? How does land use vary from place to place and overtime? Is dasoha tehsil of distt hoshyarpur is prevailing or it has been renamed? What is the time difference between London and Australia aldelaide? On what two structures does the radial head pivot? What is homeostatic drive theory? Are substrates and reactants the same? A Cellulose is? What is the present ecological balance of Asia? What part of the brain is involved in emotional memories like flashbulb memories? What substances added to the mixture in D were inhibitors? What is more stable K or Kr? Where do new root cells come from?

What do you call scientict study of words?