translation please En Espanol, I see "mandar" and "enviar" translated as "to send". What is the difference.

Correct conjugation please Cantaba could translate as "I was singing" using the Imperfect verb tense. Could you not also say, "Estaba cantando" as 'I was singing; ? If you can use both, how would you decide which form to use?

direction please Cantaba could translate as "I was singing" using the Imperfect verb tense. Could you not also say, "Estaba cantando" as 'I was singing; ? If you can use both, how would you decide which form to use?

What is the difference between 'haber' and 'tener' ? These two verbs seem to both mean 'to have'. How are they separated?

Why is the Imperfect tense being used? I would have used the Prederite tense for all 4 verbs in these two sentences. Salí afuera y estaban lleviendo Me subía a un árbol y me caí. Why is the Imperfect tense being used for estaban and subía_

What is the difference between the Spanish verbs 'to throw'? I am going to throw it away. Voy a echarlo a la basura. I throw the boomerang. Yo tiro el bumerang. I'm going to throw a rock in the water. Voy a lanzar la piedra al agua.