Cool MateBriefcase vs Case vs Portfolio
When to use each in English, with meaning, register, and examples.
Briefcase
Top 3,000 (common)
Case
Top 1,000 (very common)A2noun
Portfolio
Top 2,000 (common)C1noun
Most common: Case
| Briefcase | Case | Portfolio | |
|---|---|---|---|
| Pronunciation | 🇬🇧 //ˈbriːfkeɪs//🇺🇸 //ˈbrifkeɪs// | 🇬🇧 /["/keɪs/"]/🇺🇸 /["/keɪs/"]/ | 🇬🇧 /["/pɔːtˈfəʊliəʊ/"]/🇺🇸 /["/pɔːrtˈfəʊliəʊ/"]/ |
| Meaning | A bag for carrying documents and papers. | A situation or example. | A collection of works or documents that show someone's skills or achievements. |
| Example | He opened his briefcase to reveal the important documents. | Please put the documents in the case for safekeeping. | I left my portfolio on the train. |
| Register | Neutral | Neutral | Neutral |
| How common | Top 3,000 (common) | Top 1,000 (very common) | Top 2,000 (common) |
| CEFR level | - | A2 | C1 |
| Part of speech | noun | noun | |
| Collocations | open a briefcase, close a briefcase, carry a briefcase | classic, textbook, typical, illustrate, show, cite, arise, occur, study, example, in somebody’s/this case, case of, case by case, a case in point, be, remain, overstate, classic, textbook, typical, illustrate, show, cite, arise, occur, study, example, in somebody’s/this case, case of, case by case, a case in point, notorious, tragic, assault, handle, investigate, work on, file, report, officer, on the case, case of, court, criminal, civil, bring, prosecute, pursue, come before somebody, come to court, go to court, in a/the case, case against, case of, a case to answer, no case to answer, the circumstances of a case, compelling, convincing, good, have, prepare, outline, exist, case against, case for, the case for the defence/defense, the case for the prosecution, the merits of a case, carrying, packing, glass, in a/the case, inside a/the case, out of a/the case, attaché, overnight, acute, chronic, advanced, diagnose, report, history, notes, records, case of | create a portfolio, design a portfolio, presentation portfolio, portfolio review, digital portfolio |
| Antonyms | - | sameness, uniformity | disorganization, disorder, dismantling |
| Common mistakes | Confused with 'suitcase', which is used for travel, Using 'briefcase' as plural without an 's' ending in informal contexts, Using 'briefcase' for bags that are not specifically designed for documents | Confused with 'case' as a container instead of a situation., Using 'case' without properly specifying what type of case (e.g., legal case, medical case). | Confused with 'portefeuille', which is a French word., Using 'portfolio' in plural form incorrectly (e.g., 'portfolios' without context)., Misunderstanding it as only financial documents; it can be creative works too. |
| Usage notes | Used in formal settings, commonly associated with professionals. Not typically used in casual contexts. | Use 'case' to refer to a particular situation, especially in legal or medical contexts. It is less formal than 'instance' and more common in everyday conversation. | Used mainly in professional and academic contexts. It is appropriate when discussing one's skills or projects but can feel overly formal in casual conversations. |
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Frequently asked questions: Briefcase vs Case vs Portfolio
What's the difference between Briefcase, Case, and Portfolio?
Briefcase: A bag for carrying documents and papers. Case: A situation or example. Portfolio: A collection of works or documents that show someone's skills or achievements.
Which is more common: Briefcase, Case, and Portfolio?
Case is the most common in everyday English.
Which is more advanced: Briefcase, Case, and Portfolio?
Portfolio is the highest level, at C1, on the CEFR scale.
Can you show an example of each?
Briefcase: He opened his briefcase to reveal the important documents. Case: Please put the documents in the case for safekeeping. Portfolio: I left my portfolio on the train.
Can I use Briefcase, Case, and Portfolio interchangeably?
Not always. Briefcase, Case, and Portfolio are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.