Frequency: The word is one of the 1500 most common words in English.
1.
You use particularly to indicate that what you are saying applies especially to one thing or situation.
Keep your office space looking good, particularly your desk...
I often do absent-minded things, particularly when I'm worried.
= especially
ADV: ADV with cl/group
2.
Particularly means more than usual or more than other things.
Progress has been particularly disappointing...
I particularly liked the wooden chests and chairs.
= especially
ADV: ADV with cl/group [emphasis]