Definition of Scientific Words

Fermion:

http://www.trueknowledge.com/q/what_is_a_fermion

Fermion is part of atom like protons, electrons and neutrons moving in half-integral spin and obey Pauli laws that no more than one of a set of identical particles can occupy a particular quantum state.

Quark:

http://www.antonine-education.co.uk/Physics_AS/Module_1/Topic_5/quarks.htm 

Quarks are particles that join together to form neutrons and protons.

Quantum Numbers:

http://www.meta-synthesis.com/webbook/34_qn/qn_to_pt.html 

 Quantum number is number use to describe the energy level of atom and it consists 4 parts:

• n describes the energy level
• l describes the sub-shell
• m_l describes the orbital of the sub-shell
• m_s describes the spin