supplement

nouns

textual matter that is added onto a publication; usually at the end
addendum, postscript, supplement
is derived from
supplementary
a quantity added (e.g. to make up for a deficiency)
supplement, supplementation
is derived from
supplementary
is derived from
supplemental
a supplementary component that improves capability
accessory, add-on, appurtenance, supplement
is derived from
supplementary
is derived from
supplemental

verbs

add as a supplement to what seems insufficient
"supplement your diet"
supplement
is derived from
supplementation
verb group
serve as a supplement to
"Vitamins supplemented his meager diet"
supplement
entails
give something useful or necessary to
"We provided the room with an electrical heater"
furnish, provide, render, supply
is a type of (narrower)
make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of
"We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table"
add
serve as a supplement to
"Vitamins supplemented his meager diet"
supplement
verb group
add as a supplement to what seems insufficient
"supplement your diet"
supplement
is a type of (narrower)
form or compose
"This money is my only income"; "The stone wall was the backdrop for the performance"; "These constitute my entire belonging"; "The children made up the chorus"; "This sum represents my entire income for a year"; "These few men comprise his entire army"
be, comprise, constitute, make up, represent
add to the very end
"He appended a glossary to his novel where he used an invented language"
add on, affix, append, supplement
is derived from
supplementation