touch, contact, adjoin, piece together
接 centers on bringing things together so they touch or connect: making contact, adjoining surfaces, or piecing parts into a whole.
接 combines 扌 (hand) with 妾, which likely contributes the sound and the idea of joining or connecting. The exact historical role of 妾 is uncertain.
A hand 扌 beside 妾, which looks like a person standing under a roof, suggests a hand reaching out to make contact or join things together.
For セツ, imagine a hand touching two sets of puzzle pieces and fitting them together: sets -> セツ, and the pieces connect.
direct; immediate; personal; firsthand
connection; attachment; union; join; joint; link
touch; contact; touching
interview (e.g. for a job)
getting closer; drawing nearer; approaching
to touch; to come in contact with; to border on; to adjoin; to be adjacent; to be close
indirection; indirectness
inoculation; vaccination
direct
adjacency; contiguity; being adjoined
entertainment (of guests; esp. in the corporate world); treating (to food and drinks); wining and dining
point of tangency; point of contact
close (relationship, connection, etc.); intimate; near
adhesion; glueing; gluing; bonding; binding; adhering; fastening
welding
close contest; close match; close game; close race
(official) audience; interview; reception
reception (e.g. of visitors); dealing with
patching (clothing); darning
vaccination; inoculation; immunization; immunisation
direct tax
direct election
indirect
indirect tax