Ivory-tower and Out of reach

Ivory-tower adjective - Very learned or educated but inexperienced in practical matters.

Out of reach and ivory-tower are semantically related In some cases you can replace phrase "Out of reach" with "Ivory-tower", this phrases are similar.

Out of reach adjective - Inaccessibly located or situated.

Ivory-tower and out of reach are semantically related in conceptual topic. Sometimes you can use "Ivory-tower" instead an adjective phrase "Out of reach".