to retort / to exchange

being royal, established or managed under the auspices of a king or royalty

retribution, just deserts

appropriate, suitable, fit

a round trip, going back and forth / (by extension) an exchange (of conversations, letters, etc.) / coming and going

visit (single act of visiting)

pay someone a visit

macula (anatomy: yellow spot near the center of retina)

the heart or depth of something; the inner secrets of something

brass