Microelement and Trace element

Trace element and microelement are semantically related In some cases you can use "Trace element" instead a noun "Microelement".

Trace element noun - An element that occurs at very small quantities in the body but is nonetheless important for many biological processes.

Microelement and trace element are semantically related in minor element topic. You can use "Microelement" instead a noun phrase "Trace element".