Drawing close to Allah Almighty by obeying Him or by invoking Him while hoping for His bounty and fearing His punishment.
"Tartīl": arranging, organizing. Other meanings: deliberateness, clarifying, improving.
"Shukr": acknowledging and mentioning the favors of others. It also means: praising someone for a favor he has done. Opposite: ingratitude.
"Nadhr": something a person makes obligatory and binding upon himself.
"Sakīnah": tranquility. It is derived from "sukūn", which originally indicates firmness and stability. Other meanings: solemnity, serenity.
"Wa‘d": telling about doing something for someone in the future. Opposite: threat, warning.
"Wa‘īd": threatening, intimidation, and informing about doing something in the future.