Meaning : Celebrate by some ceremony or observation.
Example :
The citizens mark the anniversary of the revolution with a march and a parade.
Synonyms : mark
Meaning : Call to remembrance. Keep alive the memory of someone or something, as in a ceremony.
Example :
We remembered the 50th anniversary of the liberation of Auschwitz.
Remember the dead of the First World War.
Synonyms : remember
Meaning : Be or provide a memorial to a person or an event.
Example :
This sculpture commemorates the victims of the concentration camps.
We memorialized the Dead.
Synonyms : immortalise, immortalize, memorialise, memorialize