Countable Nouns That Start with B and End with UM

Explore 42 verified English countable nouns starting with B and ending with UM, including Bum, Bacterium, Bubblegum, Biennium, Begum, Botulinum and Boojum. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with BA5 words
bacterium
basidium
baculum
ballium
barathrum
Starts with BD
1 words
bdellium
Starts with BE3 words
begum
benzenediazonium
beflum
Starts with BI4 words
biennium
bifidum
bimillennium
bivium
Starts with BL3 words
blackgum
bluegum
blellum
Starts with BO6 words
botulinum
boojum
bonum
botrychium
bothrium
botrydium
Starts with BR10 words
brachium
bryum
bronchium
brontotherium
bryophyllum
brosimum
bromatium
brimborium
brontozoum
bronteum
Starts with BU10 words
bum
bubblegum
bupleurum
buccinum
bulbophyllum
bucranium
bullarium
bulbocodium
bungarum
buphthalmum

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.