This

Voornaamwoord

  means

Werkwoord

  that

Ondergeskikte voegwoord

  all

Bepaler

  airports

Selfstandige naamwoord

  are

Hulp

  aerodromes

Selfstandige naamwoord

,  but

Koördinerende konjunksie

  not

🚫

Deeltjie

  all

Bepaler

  aerodromes

Selfstandige naamwoord

  are

Hulp

  airports

Selfstandige naamwoord

.

This means that all airports are aerodromes, but not all aerodromes are airports.

This means that all airports are aerodromes, but not all aerodromes are airports.