An user English
says…

This
Pronoun
  means
Verb
  that
Subordinating conjunction
  all
Determiner
  airports
Noun
  are
Auxiliary
  aerodromes
Noun
but
Coordinating conjunction
  not
🚫
Particle
  all
Determiner
  aerodromes
Noun
  are
Auxiliary
  airports
Noun
.

This means that all airports are aerodromes, but not all aerodromes are airports.
Words and sentences
New
This

plural of Thi

New
are

New
all

New
aerodromes

plural of aerodrome

New
airports

plural of airport

New
but

New
means

New
that

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