Looks like Barringtonia asiatica...fish killer tree

looks like syzigium sp or something in myrtaceae...
can you show leaves detail including leaves arrangement (opposite?/alternate?)

a Syzigium I believes, but not S. jambos nor samarangense.. perhaps the fruits photos when it develop will help better for the exact ID... or I wish someone who familiar with Syzygium sp in Colombia will be able to ID this... ( Syzygium genus comprises more than 1500 species... and some are still unclassified or classified in Eugenia)

This is the fruit

Fruits are very similar to pomarosa the rose apple (S jambos)....