P vs B

pig vs big: hear and say the difference

pig and big are identical except for one sound: pig has the p sound, /p/, and big has the b sound, /b/. Identical lips: P releases with a puff of air and no voice, B releases gently with the voice already humming.

Listen

The two words

pig

/pɪɡ/

the p sound

big

/bɪɡ/

the b sound
Articulation

The difference

What actually changes

Identical lips: P releases with a puff of air and no voice, B releases gently with the voice already humming.

pig — /p/

In the mouth
Lips
Pressed flat together, then popped apart.
Tongue
Low and out of the way, waiting for the vowel.
Jaw
Nearly closed, relaxed — it opens as the lips release.
Tongue and lips

big — /b/

In the mouth
Lips
Pressed together, then released softly.
Tongue
Low and neutral.
Jaw
Almost closed, opening into the vowel.
Tongue and lips
In context

Each word in a sentence

  • pig

    The pig rolled in the mud.

  • big

    That is a big decision.

Who merges this

Why this pair is hard

Most Arabic varieties have no p and substitute b. Spanish, French, Italian, Hindi, Urdu and Russian have an unaspirated p, so an English P at the start of a word can be heard as B. Tamil, Cantonese, Korean and Thai sort their stops by aspiration or position rather than by voicing.

Questions

Straight answers

What is the difference between "pig" and "big"?

One sound. pig is /pɪɡ/ and big is /bɪɡ/ — everything else in the two words is identical, so that single contrast carries the whole meaning. Identical lips: P releases with a puff of air and no voice, B releases gently with the voice already humming.

Why do I say "pig" and "big" the same way?

Most Arabic varieties have no p and substitute b. Spanish, French, Italian, Hindi, Urdu and Russian have an unaspirated p, so an English P at the start of a word can be heard as B. Tamil, Cantonese, Korean and Thai sort their stops by aspiration or position rather than by voicing.

Should I train my ear or my mouth first?

Your ear. If you cannot reliably hear which word was said, your mouth has no target to aim at, and drilling produces a sound you cannot check. Run the listening test on this page until you are scoring four or five out of five, then record the pair.

Practise this word

Say "pig" and "big" and see which one you said

One take covers both words: reference mode aligns each sound against its target, so the contrast comes back scored on both sides. Free, private, in your browser.