• Noun: the present time or age; examples: "the world of today", "today we have computers"
• Noun: the day that includes the present moment (as opposed to yesterday or tomorrow); examples: "Today is beautiful", "did you see today's newspaper?"
• Adv: in these times; examples: "it is solely by their language that the upper classes nowadays are distinguished"- Nancy Mitfor", "we now rarely see horse-drawn vehicles on city streets", "today almost every home has television"
• Adv: on this day as distinct from yesterday or tomorrow; example: "I can't meet with you today"