Note: I do not know the definition of
"electronrestmass" within the phrase
"electron rest mass".  The following sound
alike: electric capacitance, electric current
density, elastance, electric charge, electric
flux, electric induction flux, electronic
charge, electric charge density, electric
displacement, electric current, electric
dipole moment, electric field strength,
electric intensity, electric flux density,
electric polarization, electric mobility,
electric potential, electromotive force,
electric resistance, electromagnetic moment,
electron volt, electric inductance, electron
mass, electrochemical potential, electric
field, electrical power, elasticity.  The
following partially match: elementary charge,
ell.