[Paraview] Paraview input data format: CELL_DATA vs POINT_DATA

[Canis Major]

I have a structured grid data, that is why I specify 'DATASET
STRUCTURED_GRID' type at the output file.
I have velocity and pressure as cell  attribute, as a result I write
CELL_DATA.
But when I visualize the data in Paraview I cannot perform for example
glyphs or streamlines filters.
What is the difference in paraview interpretation of CELL_DATA and
POINT_DATA?
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