suffix convention
light spectrum
100

<stopping> word sum

What is the doubling suffixing convention?

stop + ing --> stopping

100

ultra denotation

beyond

200

<baking> word sum 


Final <e> suffixing convention 

bake +ing --> baking

200

<infra> denotation

below, beneath

300

<cried> word sum

Toggle <i> suffixing convention

cry +ed --> cried

300

<gamma> denotation

third letter of Greek alphabet


400

<beautiful> word sum

toggle <i> suffixing convention

beauty +ful --> beauty+ful

400

<radio> denotation

wireless transmission

500

<reference> word sum

stress no doubling word suffixing

re+fer+ence--> reference

500

<x-ray> denotation

beam, ray