The weight on a pendulum is a 'mass' or a 'bob'.
It is called weight.
It is called weight...
atmosphere
That is called a weight; a weight is a kind of force.
A flag specialist is called a vexillologist.
A bird specialist is called an orithologist
a specialist in the study of substances attained by mining. its called mineralogist
A vocal specialist is called a Speech Therapist
Such a specialist is known by the title of podiatrist or chiropodist.
no
A. Pediatricians
A climatologist
skullologist
secatarist
It is a volcanologist.
A "Roundsman"