This is the 802nd most frequent Spanish word.
amigo
Friend.
The word 'amigo' here is used to denote a single male friend or a mixed-gender friend when the gender isn't specified.
Mi amigo y yo fuimos al cine ayer.
My friend and I went to the cinema yesterday.
In this instance, 'amigos' refers to a group of male friends or a mixed-gender group, showcasing its plural usage.
Ella tiene muchos amigos en su nueva ciudad.
She has many friends in her new city.
Here, 'amigo' is used in a general sense to describe the concept of a good friend, using a singular form for a hypothetical example.