HI there
There isn't hardly any difference at all.
My little boy goes to our local nursery which has general sessions for children from 2 years 6 months and then when they are in the year before they start reception they go to the classes called pre-school.
How old is your little one?? There is absolutely no need for your child to start any form of education until the year of their 5th birthday when legally they have to go to school.
Going to pre-school/nursery is an added bonus as it can help with early part of education such as number/letter recognition, social skills etc. Its nice to have a head start but not essential if you want to keep your little one at home for as long as possible (as a lot of mums do)
HTH
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