Crisis and Turn the tide

Crisis noun - A time or state of affairs requiring prompt or decisive action.

Turn the tide and crisis are semantically related In some cases you can replace phrase "Turn the tide" with "Crisis", this terms are similar.

Turn the tide verb - Cause a complete reversal of the circumstances.

Crisis and turn the tide are semantically related in critical juncture topic. Sometimes you can use "Crisis" instead a noun phrase "Turn the tide".