There are a certain set of behaviours which we group together and call a “particle”.
There are also a certain set of behaviours which we group together and call a “wave”.
Light does not fall into either one of those two groups of behaviours. It has some properties that would be found in one group, but also other properties which would be found in another group.
This is an issue of *language*, not *physics*. If we invented a word like “flurble” which described all of the properties of light, then light would be a flurble and not a particle or a wave.
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