Gum and Kauri gum

Gum noun - Any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying.

Kauri gum and gum are semantically related. In some cases you can use "Kauri gum" instead a noun "Gum".

Kauri gum noun - Resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum.

Gum and kauri gum are semantically related. Sometimes you can use "Gum" instead a noun phrase "Kauri gum".