entity
physical
abstract
quantity
number
physical quantity
constant quantity
function quantity
unit of measure
systeme international unit
liter
centimeter
day duration
hour duration
minute duration
week duration
year duration
amu
electron volt
angstrom
foot
inch
mile
united states gallon
quart
pint
cup
ounce
united kingdom gallon
atom gram
pound mass
slug
rankine degree
fahrenheit degree
pound force
calorie
british thermal unit
angular degree
united states dollar
united states cent
euro dollar
euro cent
bit
byte
kilo byte
mega byte
attribute
set or class
relation
proposition
graph
graph element