that
其 centers on pointing to something specific: that thing, that one, or that particular referent. It functions as a demonstrative pronoun or adjective.
其 is an ancient demonstrative character. Its original form likely depicted a winnowing basket, later borrowed phonetically to mean 'that'. The modern shape is a stylized simplification of that early pictograph.
The top 一 and ハ look like a pointing hand, and the lower 甘-like shape is the object being pointed at. Together they say 'that one right there'.
For キ, imagine pointing at a key object and saying 'that key': key -> キ, and the kanji means 'that'.
without change; as is
that much; as much; to that extent; only that; that alone; no more than that; that is all (when finished speaking)
well, ...; right, ...; now, ...
and then; after that
and then; in addition to that; also; even so
that
that
anywhere; here and there
such-and-such a place
come on; hurry up; chop chop
indirectly
you
especially; particularly
just what you'd expect from ...; that's just like (him, her, etc.); that's (exactly) why ...; that's (precisely) the reason ...
indirectly
without that
for that very reason
even so; be that as it may; concerning that; still
anyway; by the way; incidentally; well; to change the subject
anyway; by the way; incidentally; well; to change the subject