Firsthand
Part of speech: adjective
Definition: Direct, without intermediate stages. Brand new, as opposed to used or secondhand.
Example sentence: When I served as a prosecutor, I saw firsthand the many injustices that are embedded in our communities. But I also saw the difference it can make in someone's life when they have someone to stand up and fight for them.
Primary
Part of speech: adjective
Definition: The first in a group or series.That which is placed ahead of others.
Part of speech: noun
Definition: A preliminary election to select a political candidate.The first year of grade school.A base or fundamental component; something that is irreducible.The most massive component of a gravitationally bound system.A primary school.Any flight feather attached to the manus (hand) of a bird.A primary colour.
Part of speech: verb
Definition: To take part in a primary election
Example sentence: Human beings, you see, do absolutely two primary things. We see like and unlike. Like becomes, in literature, simile and metaphor. Unlike becomes uniqueness and difference, from which I believe, the novel is born.