gyanjyoti

Appendix : pl. appendixes when referring to the bodily organ

pl. appendices when referring to parts of books and documents

Appraise,apprise : Appraise means 'to assess', as in a need to appraise existing techniques

apprise means 'to inform' as in apprise someone of something

Word of caution : as in once apprised of the real facts.......(here people often use 'appraise' which is wrong)

Barely : like scarcely, should normally be followed by when, not than like in

He had barely reached the door when he collapsed

Tortuous, torturous : they have different core meanings.

Tortuous means 'full of twists and turns', as in we took a tortuous route

Torturous means 'involving or causing torture' as in a torturous five days of fitness training

Word of caution : Sometimes their usage overlape as in he would at last draw in a tortuous gasp of air

Treason : formerly two types of treason : petty treason, the crime of murdering one's master

high treason, the crime of betraying one's country

Word of caution : the crime of petty treason being abolished in 1828, moderners use only high treason now..

Mental : mental is now largely being replaced by 'psychiatric'. And mentally handicapped by less demeaning terms such as learning difficulties.

Merchandise : merchandise and words derived from it, such as merchandising, are always correctly spelled with an s, not an z.

Non-flammable and non-inflammable : Both the words mean the same

Normalcy : It has been criticised as an uneducated alternative to normality.

FYI : 'Normalcy' is normally found in Indian English

Kudos : There is no singular-pl. concept for this word as 'kudo'.

eg : He received much kudos for his work. (not 'many kudos')