Bring vs. take
Bring should be used when the action is directed toward the subject, while take should be used when it’s away from the subject. Bring can also mean to take something to a place.
Breach vs. breech
Breach means the act of breaking a law or agreement, a gap in a barrier or to break something. Breech, on the other hand, means the lower part of something or a breech birth.
Between vs. among vs. amid
Between implies a one-to-one relationship while among implies a collective relationship. Amid, on the other hand, is usually used with mass nouns.
Born vs. borne
As an adjective, born means a specific nationality or the natural ability to do a particular thing while borne means carried or transported by something.
Amused vs. bemused
Amused means to find something funny while bemused means to be puzzled or bewildered.
Blatant vs. flagrant
Blatant means bad behaviour done openly or unashamedly while flagrant is a stronger word which implies the act is illegal or strongly immoral.
Awhile vs. a while
Awhile means for a short time. A while refers to a period of time and follows the prepositions for or in.
Bi- vs. semi-
Bi- means two while semi- means half, meaning a biweekly meeting would be held every two weeks while a semiweekly meeting would be held twice a week. However, biannual and semiannual both mean twice a year. To say once every two years, use biennial instead.
Beside vs. besides
Bi- means two while semi- means half, meaning a biweekly meeting would be held every two weeks while a semiweekly meeting would be held twice a week. However, biannual and semiannual both mean twice a year. To say once every two years, use biennial instead.
Avenge vs. revenge
Both avenge and revenge mean to inflict harm in return for a wrong done to someone, but revenge implies the action comes out of resentment or anger. Revenge is more often used as a noun.
Biannual vs. semiannual vs. biennial
Biannual and semiannual both mean twice a year. To say once every two years, use biennial instead.
Auger vs. Augur
An auger is a tool used for boring while augur means to foretell a good or bad outcome.
Attain vs. obtain
Attain means to succeed in achieving something or to reach a specified size or amount. Attain implies an effort to achieve, while obtain is to gain possession of something. However, in everyday usage both attain and obtain are often treated as synonyms.
Assumption vs. presumption
Assumption means to accept something as true which isn’t founded on strong evidence, while presumption is based on evidence which has some credibility.
Assent vs. consent
Assent indicates the approval of something after careful consideration, while consent implies something is being allowed. For consent, the consenter may not necessarily be happy about the outcome.
Assemblage vs. assembly
Assemblage tends to be an informal collection while assembly refers to a more formalised group, such as a national assembly or school assembly.
Assault vs. battery
For a general audience, assault and battery have the same meaning. While this may vary depending on your country of residence, typically battery involves physically touching someone, while assault doesn’t and instead refers to the threat of violence. In some jurisdictions, this distinction between assault and battery no longer applies.
Apt vs. likely
Apt means suitable in a given circumstance, have the tendency to do something or be quick to learn while likely means probable or promising.
Approve vs. endorse
Approve means to accept something as satisfactory while endorse means to declare public approval or support for something. While approve implies that the approver has a positive attitude towards something, endorse implies a positive attitude and active support.