The phrase "a common frontier" is correct and usable in written English.
It can be used to describe a shared boundary or limit between two entities, often in a metaphorical sense, such as cultures, ideas, or regions.
Example: "The two nations have established a common frontier in their efforts to collaborate on environmental issues."
Alternatives: "a shared boundary" or "a mutual limit".
The two parties recognized the Euphrates as a common frontier.
By concluding an alliance with a Turkish leader called Sinjibu (Silzibul), Khosrow was able to inflict a decisive defeat on the Hephthalites, after which event a common frontier between the Turkish and Sāsānian empires was established.
It provides three different configurations: 1) extreme categories are anchored; 2) intermediary categories have a common frontier with one extreme category and 3) the central category is presumably free of direct interference from extreme categories.
A search in the SITVIT2 database showed that beyond Guyana and Suriname, this SIT is commonly isolated in patients in French Guyana, which shares a common frontier with Suriname highlighting transborder circulation of this clone.
Even though Iran and Israel have never shared a common geographic frontier, over the last 4000 years, scientists and researchers of both nations have repeatedly shown their willingness and commitment to interactive learning and collaboration.
In the 1930s French military engineers designed and constructed the Maginot Line, a supposedly impregnable defensive system protecting France's common frontier with Germany and Luxembourg.
There, aboard a riverboat, they signed an accord on "the gradual abolition of controls at the common frontier".
Since December, when terrorists attacked the Indian Parliament building, a million Indian and Pakistani soldiers have been mobilized along their common frontier.
Both sides moved troops to their common frontier.
The treaty of 1909 proposed the commission "to prevent disputes regarding the use of boundary waters and to settle all questions which are now pending between the United States and the Dominion of Canada involving the rights, obligations, or interests of either in relation to the other or to the inhabitants of the other, along their common frontier".
Syria would still apply military pressure on Israel through Hezbollah in Lebanon rather than its common frontier with Israel along the Golan Heights, thereby avoiding direct military entanglements that would put his state at risk.
