Words Existing Only in the Plural Form

English is a strange and fascinating language. www.askoxford.com lists words that have no singular form. They include:

Names of instruments: bellows, binoculars, forceps, gallows, glasses, pliers, scissors, shears, and tongs.

Names of articles of dress: braces, briefs, flannels, jeans, knickers, pants, pajamas, shorts, tights, and trousers.