
Pulmanaria officinalis is a good example of a plant with many common names. The RHS lists them as (and there are probably more):
Bedlam cowslip
Beggar’s basket
Bugloss cowslip
Jerusalem cowslip
Lady’s cowslip
Mary’s honeysuckle
Mary’s tears
Soldiers and sailors
Spotted dog
Virgin Mary’s honeysuckle
Adam and Eve
Jerusalem sage
Lady’s milk
Sage of Bethlehem
So you see it was inevitable that someone (I.e. Carl Linnaeus 1707-1778) would create a system for naming and categorising living things that would finally put an end to the confusion and that would enable us to understand what each other were referring to and not least how these living things relate to each other. Paved the way for Darwin.