diffrence between sort, kind and type?

how to write "mi audiencia son los adolescentes" in english? In this case "audiencia" is singular (my audience is the teens) or plural (my audience are the teens)??

difference between other and another?

How can I say: "estomas" (pores of the plants) in english? I need it for my english homework that talks about biology.

An IB student I am in International Baccalaureate programme diploma. That program is so nice because it teach us about how to be in differents fields, how to have an open-minded and others things. The issue is that the subject called "english" is too difficult for me, because I am too shy and I need to improve my speaking skills.

Difference of "like" and "as"? I can`t learn the difference :c

I am scare I want to learn english as long as posible..