ogromno

In a sentence

• Na trgu je bilo ogromno ljudi.

  There were a lot of people in the market.

  The word 'ogromno' functions here as an adverb indicating the large quantity of people present.

• To je ogromno drevo, staro več stoletij.

  This is a huge tree, centuries old.

  In this sentence, 'ogromno' is an adjective describing the size of the tree to emphasize its impressiveness.

• Ogromno sem se naučil med to izkušnjo.

  I learned a lot during this experience.

  Here, 'ogromno' acts as an adverb to quantify the extent of learning, modifying the verb 'learned'.