4 adverbs to describe how to synonymous

With the sixth sense possessed by most men who live in a country where the law and the sixshooter are practically synonymous terms, Racey was conscious that Marie, the Happy Heart Lookout, had suddenly drifted up to his left flank and now stood with arms akimbo on the inner edge of the sidewalk.

and likewise alackaday (which is an approximately synonymous expression)!

The terms retardation and resistance are not considered technically synonymous, but are intended, as electrical terms, to designate two very different forces.

Festival, Dec. 4. BARBARIANS, originally those who could not speak Greek, and ultimately synonymous with the uncivilised and people without culture, particularly literary; this is the sense in which Matthew Arnold uses it.

4 adverbs to describe how to  synonymous  - Adverbs for  synonymous