especially
In Spanish, 'especialmente' is used similarly to 'especially' in English. It is used to single out one person, thing, or situation over all others. It could also be used to mean 'particularly'. The usage of 'especialmente' largely depends on the context of the sentence.
I go to the library, especially to study.
In this case, 'especialmente' is used to specify the main reason why the person goes to the library.
He is a generous man, especially with children.
This sentence uses 'especialmente' to indicate where the man's generosity is most observed.
It's sunny, especially in the summer.
Here, 'especialmente' is used to denote that the sunny weather is particularly noticeable in the summer.
They always come for dinner, especially on Fridays.
In this phrase, 'especialmente' is specifying a time when they tend to come more often for dinner.
I love to travel, especially to European countries.
This sentence uses 'especialmente' to express specific preference within the general liking for travel.
Reading is vital, especially for students.
In this example, 'especialmente' is used to stress the importance of the action (reading) for a certain group (students).
Elena is very intelligent, especially in mathematics.
'Especialmente' in this sentence pinpoints where Elena's intelligence is particularly noticeable.
Mario plays various instruments, especially the guitar.
This phrase uses 'especialmente' to indicate the instrument Mario particularly excels at.
Books are expensive, especially textbooks.
In this sentence, 'especialmente' is used to indicate which type of books are particularly expensive.
I like ice cream, especially vanilla.
This example is using 'especialmente' to express a particular preference within a general preference. 'Especialmente de vainilla' means the speaker mainly prefers the vanilla flavor.