Hospital grasping cleaning lady’s figures (3,6)

I believe the answer is:

bar charts

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'figures' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Maybe you can see an association between them that I can't see?

'hospital grasping cleaning lady's' is the wordplay.
'hospital' becomes 'Barts' (short for St Bartholomew's Hospital).
'grasping' means one lot of letters goes inside another (inserted letters are held or grasped).
'cleaning lady' becomes 'char' (synonyms).
'barts' enclosing 'char' is 'BAR CHARTS'.

Can you help me to learn more?

(Other definitions for bar charts that I've seen before include "Statistical diagrams" , "Graphs" .)

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