Erratum and corrigendum
Also called: erratum, corrigendum, correction
Published corrections to an article: an erratum for the publisher's error, a corrigendum for the author's.
Both are notices linked to the original article, correcting something specific — a mislabelled figure, a wrong number, a missing author — without withdrawing the paper. The distinction is who made the mistake, and journals apply it inconsistently.
If a correction affects what you are citing, cite the corrected value and note the correction. The publisher's article page links to any notices, which is a reason to visit it rather than relying on a PDF you downloaded a year ago.