Definitions of tide:

• noun:   the periodic rise and fall of the sea level under the gravitational pull of the moon
• noun:   something that may increase or decrease (like the tides of the sea)

  Example: "A rising tide of popular interest"

• noun:   there are usually two high and two low tides each day
• verb:   be carried with the tide
• verb:   cause to float with the tide
• verb:   rise or move foward