1.
before (time)
Indicates that something happens prior to another event or time.
2.
in front of (location)
Indicates a position in front of something.
前に has two distinct uses: temporal (before) and spatial (in front of).
TIME PATTERNS:
- [verb dictionary form] + 前に: before doing...
- [noun] + の前に: before [noun]
LOCATION PATTERN:
- [noun] + の前に: in front of [noun]
OPPOSITES:
前に VS 前:
前に emphasizes the point in time/space; 前 alone can modify nouns (前の日 = the previous day).