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