Fortnightly
Part of speech: noun
Definition: a publication issued fortnightly; a bi-weekly
Part of speech: adjective
Definition: occurring once in a fortnight
Part of speech: adverb
Definition: once in a fortnight
Biweekly
Part of speech: adjective
Definition: Occurring once every two weeks.Occurring twice a week (but see the Usage notes).
Part of speech: adverb
Definition: Every two weeks.Twice a week (but see the Usage notes).
Part of speech: noun
Definition: Something that is published or released once every two weeks.