Nouns

(n)sectionala piece of furniture made up of sections that can be arranged individually or together

Adjectives

(a)sectionalrelating to or based upon a section (i.e. as if cut through by an intersecting plane)“a sectional view”, “sectional drawings”
(s)sectional, sectionedconsisting of or divided into sections“a sectional sofa”, “sectioned plates”
(s)sectionalrelated or limited to a distinct region or subdivision of a territory or community or group of people“sectional tensions arose over slavery”