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

Formula 51
Unique vocabulary and phrases by level
How difficult is Formula 51 in English?
Formula 51: 59.7% A1–A2 vocabulary; 18.4% B2, C1, and rare vocabulary. Vocabulary size: 1,447.
Unique vocabulary
- For A2 learners: 28.5% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 18.4% of unique vocabulary is above B1 or marked rare. Preview recurring words and use English subtitles.
- For B2 learners: 13.2% of unique vocabulary is above B2 or marked rare. Preview recurring words and use English subtitles.
11.8% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
86.3% A1–A2 vocabulary; 5.0% B2, C1, and rare vocabulary; 5.9% 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
- mate (B1): 11 occurrences in available subtitles.
English meaning: A friend or companion; also a partner in some contexts.
Subtitle example:
Drugs are our mates .
- bollock (rare): 10 occurrences in available subtitles.
Subtitle example:
None of this fuckin' conversation-and-coffee bollocks .
- chemist (B2): 9 occurrences in available subtitles.
Subtitle example:
It's bogus. It's what we chemists call a placebo.
- get in (B2): 9 occurrences in available subtitles.
English meaning: To enter a place or vehicle; in some contexts, to arrive.
Subtitle example:
Got my degree in...in pharmacology.
- hell (C1): 9 occurrences in available subtitles.
English meaning: A place of suffering in some religious beliefs; also used informally to express anger or surprise.
Subtitle example:
Hell, you could buy your own goddamn stadium with that.
Compare with titles in similar genres
- Filth: 18.4% B2, C1, and rare vocabulary (0.0 percentage points more than Formula 51).
- Bad Boys II: 18.3% B2, C1, and rare vocabulary (0.1 percentage points less than Formula 51).
- Beverly Hills Cop Axel F: 18.3% B2, C1, and rare vocabulary (0.1 percentage points less than Formula 51).
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: