Onto Vs On to Difference - 05

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The word “onto” is a preposition, which typically means movement on top of something or similarity in alignment. For example, “The blocks tumbled onto the floor.” or "I was clearly onto something suspicious." On the other hand, “on to” is a phrasal verb which is used when ‘on’ is a part of the verb as illustrated in the sentence “I held on to the railing.”