Combustion is the essential fact which is at the basis of that assemblage of visible phenomenon which we call fire; combustion being the continuous chemical combination of a substance with some element, as oxygen, evolving heat, and extending from slow processes, such as those by which the heat of the human body is maintained, to the processes producing the most intense light also, as in a blast-furnace, or on the surface of the sun. Fire is always attended with light, as well as heat; blaze, flame, etc., designate the mingled light and heat of a fire. Combustion is the scientific, fire the popular term. A conflagration is an extensive fire. Compare [LIGHT].
FLOCK.
Synonyms:
| bevy, | covey, | group, | herd, | lot, | set, |
| brood, | drove, | hatch, | litter, | pack, | swarm. |
Group is the general word for any gathering of a small number of objects, whether of persons, animals, or inanimate things. The individuals in a brood or litter are related to each other; those in the other groups may not be. Brood is used chiefly of fowls and birds, litter of certain quadrupeds which bring forth many young at a birth; we speak of a brood of chickens, a litter of puppies; brood is sometimes applied to a family of young children. Bevy is used of birds, and figuratively of any bright and lively group of women or children, but rarely of men. Flock is applied to birds and to some of the smaller animals; herd is confined to the larger animals; we speak of a bevy of quail, a covey of partridges, a flock of blackbirds, or a flock of sheep, a herd of cattle, horses, buffaloes, or elephants, a pack of wolves, a pack of hounds, a swarm of bees. A collection of animals driven or gathered for driving is called a drove.
FLUCTUATE.
Synonyms:
| hesitate, | swerve, | vacillate, | veer, |
| oscillate, | undulate, | vary, | waver. |