This is the 843rd most frequent French word.
manifestation
A demonstration or protest.
In this sentence, 'manifestation' is used to mean a 'protest' or 'demonstration' that usually occurs in a social or political context.
La manifestation a attiré des milliers de participants.
The protest attracted thousands of participants.
Here, 'manifestation' refers to the 'expression' or 'display' of a feeling or emotion.
La manifestation de sa joie était évidente quand elle a souri.
The expression of her joy was evident when she smiled.
In this example, 'manifestation' describes a 'sign' or 'indicator' of something, often in a medical or metaphorical sense.