Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.

Harry Potter and the Chamber of Secrets
Unique vocabulary and phrases by level
How difficult is Harry Potter and the Chamber of Secrets in English?
Harry Potter and the Chamber of Secrets: 63.9% A1–A2 vocabulary; 16.1% B2, C1, and rare vocabulary. Vocabulary size: 1,493.
Unique vocabulary
- For A2 learners: 28.0% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 16.1% of unique vocabulary is above B1 or marked rare. Preview recurring words and use English subtitles.
- For B2 learners: 10.7% of unique vocabulary is above B2 or marked rare. Preview recurring words and use English subtitles.
8.1% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
92.4% A1–A2 vocabulary; 3.5% B2, C1, and rare vocabulary; 1.6% Unclassified.
This counts repeated eligible words. Phrases are excluded from this calculation to avoid counting their component words twice.
Recurring words and phrases to preview
- chamber (C1): 32 occurrences in available subtitles.
Subtitle example:
HERMIONE: "The Chamber of Secrets has been opened.
- heir (B1): 12 occurrences in available subtitles.
Subtitle example:
Enemies of the Heir, beware."
- basilisk (rare): 9 occurrences in available subtitles.
Subtitle example:
...none is more deadly than the basilisk. Capable of living for hundreds of years...
- mudblood (rare): 8 occurrences in available subtitles.
Subtitle example:
You'll be next, Mudbloods.
- wand (rare): 8 occurrences in available subtitles.
Subtitle example:
LOCKHART: Wands at the ready.
Compare with titles in similar genres
- Inkheart: 15.9% B2, C1, and rare vocabulary (0.1 percentage points less than Harry Potter and the Chamber of Secrets).
- The BFG: 16.3% B2, C1, and rare vocabulary (0.2 percentage points more than Harry Potter and the Chamber of Secrets).
- Percy Jackson Sea of Monsters: 16.4% B2, C1, and rare vocabulary (0.3 percentage points more than Harry Potter and the Chamber of Secrets).
These percentages describe vocabulary, not the proportion of dialogue you will understand. CEFR labels are estimates, not official film ratings. Accent, speed, songs, context, and your own vocabulary also affect comprehension. Repeated occurrences may include repeated dialogue or lyrics.
How we estimate vocabulary difficulty · Evidence generated: