The verbs provide and furnish both mean to make something available, but provide is the more general and far more prevalent term. Furnish suggests equipping someone (or a group of people) with needed or useful items or information for a specific task or purpose. Where furnish very notably diverges from provide is in its ability to pull a room together; furnish in this sense means “to supply (a house or room) with necessary furniture, carpets, appliances, etc.”

The nouns development and advancement both deal with change. But advancement implies great forward progression, the kind that we might associate with significant leaps in research or understanding. This term is also widely used to talk about active furtherance of something, such as a cause, belief, or undertaking. For instance, an organization might be focused on the advancement of human rights or the advancement of democratic values. Advancement may also be used to refer to promotion in rank or standing, the kind of upward movement an employee might strive for at a workplace.

To call something impeccable is to emphasize its lack of flaws, faults, or blemishes, and to suggest that it is beyond reproach. Given that criteria, it’s no surprise that impeccable also connotes rarity and—drawing on its earliest sense in English, “not liable to sin; incapable of sin”—a degree of virtuousness. An impeccable reputation, for instance, is one untainted by scandal or intrigue, and impeccable credentials are so squeaky clean, they leave no room for objection or doubt.