Alteration is a change.
Apt vs Likely vs Liable
Apt, likely and liable are often interchangeable when followed by to and the infinitive, but clear differences may be descried.
Approve vs Endorse vs Sanction vs Accredit vs Certify
Approve, endorse, sanction, accredit and certify all mean to have or to express a favorable opinion of.
Another kettle of fish vs Another turn of the screw
another kettle of fish —(also: different kettle of fish, a) a completely different matter or situation:
Altar vs Alter
Altar refers to the platform at the front of a church or temple.
Aloud vs Out loud
Aloud is standard English. Out loud is considered colloquial.
Angel-water vs Holy water
angel-water—a perfume or cosmetic in which a plant Angelica (Herba angelica) is a chief ingredient:
Appropriation vs Grant vs Subvention vs Subsidy
Appropriation, grant, subvention and subsidy all mean money or property given or set apart by an authorized body for a predetermined use by others.
Approbation vs Approval
Approbation and approval are closely related in meaning.
Almost vs Most
When you want to say nearly all, use almost.
And all vs And all that
and all that—(coll.) and other similar things considered unnecessary to mention:
Allusion vs Delusion vs Illusion
Allusion is a reference to something.