Sound Contrast: /s/ vs. /θ/

Listen to the difference between the consonant sounds (/s/ vs. /θ/) in the following pairs of words.

• face
  | faith
• mass
  | math
• mouse
  | mouth
• pass
  | path
• sank
  | thank
• saw
  | thaw
• sick
  | thick
• sing
  | thing
• sink
  | think
• some
  | thumb
• tense
  | tenth

Depending on your native language distinguishing the difference can be very easy or very difficult.